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(ham/gnuradio-core) Updated 3.10.9.1 to 3.10.9.2

[3.10.9.2] - 2024-01-17
Changed
Project
    Fix a few memory errors in various modules.

GRC
    Fix regressions in bus connections.

(ham/gnuradio-core) Updated 3.10.8.0 to 3.10.9.1

(no info for 3.10.9.1)

## [3.10.9.0] - 2023-12-24

### Changed

#### Project
- Python minimum version is now 3.7.2, vs 3.6.5, to support type hints. Even
Python 3.7 is EOL, so this is not expected to affect people using newer versions of
GNU Radio.
- Add tox.ini, so that editors use the same formatting as github CI.
- Use pointers to pass s32fc arguments to VOLK in gr-blocks, gr-digital, and
gr-dtv to avoid undefined behavior. The fix is conditional on VOLK 3.1.0, which
add a new supporting function.

#### Runtime
- Disallow None for pmt_t arguments in Python.
- Support spdlog installations with internal or external libfmt.

#### GRC
- Use text labels to specify types for block parameters, instead of background colors
which were difficult to read/remember.
- Enable setting of documentation URLs, relative or absolute in yaml. This allows
OOTs to use the documentation link in the block parameter dialog.
- Disallow use of block ids that are Python keywords and "gnuradio".
- Add type annotations in some places (required bump to Python 3.7.2).
- Use C version of YAML loader (yaml.CSafeLoader) for better performance.
- Connections may have properties for supported connection domains. This feature
was added for RFNoC connections. Standard stream and message connections do not
support this feature, but they may in future versions.
- Check grc file version. The above feature required a version bump to "2". Where
no connection properties are used, version "1" is still emitted. Note that previous
versions of GRC do not check for file version. RFNoC flowgraphs with connection
properties will fail to load in previous versions as a result.
- Fix bug where an impressive number of backslashes were added to some filenames.

#### gr-dtv
- Read expected data as little-endian

#### gr-fec
- Add FEC_API to CCSDS Reed-Solomon functions so they can be used by OOTs.

#### gr-qtgui
- QT GUI Msg Push Button: add a callback for Message Value to allow it to
change at runtime.

#### gr-uhd
- RFNoC Rx-Streamer: Add start stream options
- Add back-edge property to RFNoC connections

#### Build system and packaging
- Update conda build. Re-rendered with conda-build 3.27.0, conda-smithy 3.28.0,
and conda-forge-pinning 2023.11.07.18.09.01.
- Use utf-8 encoding when writing files in gr_python_install.

#### Testing
There has been a great effort to identify why tests fail intermittently, or only
on certain platforms. This has lead to a number of improved test, and identification
of a number of real bugs.

(ham/gnuradio-core) updated 3.10.7.0 to 3.10.8.0

## [3.10.8.0] - 2023-10-20

### Changed

#### Runtime
- Add `MAP_FIXED` to circular buffer implementations using `shm_open()` and
  mmap backed by tmp files. These versions are not used by most system, and
  flaws were discovered during a FreeBSD build.
- PMTs can be formatted for logging (format wrapper added).
- New `io_signature::make()` variant replaces `makev()`, and optionally specifies
  buffer types. Previous variants are still valid, for backward compatibility. The
  single-stream `make()`, along with the `makev()`, `make2()` and `make3()` variants
  should not be used in new code, and may be removed in the future.

```
    make(int min_streams,
         int max_streams,
         const std::vector<size_t>& sizeof_stream_items,
         const gr::gr_vector_buffer_type& buftypes =
             gr::gr_vector_buffer_type(1, default_buftype::type));
```

- Fix logging params to be compatible with C++20

#### GRC
- Add "Choose Editor" button to Python block properties. Use the GTK app chooser.
  Save choice to the config file.
- Correct Python Qt imports in Hier blocks and flowgraph templates.

#### gr-blocks
- Enable building the benchmark testing executable, which runs tests on various
  math functions.
- Repeat block implemented as a basic block (vs sync interpolator) and output
  buffer allocation fixed.
- Add a GRC example for Throttle usage.

#### gr-digital
- Add `set_sps()` to Symbol Sync.
- Header Format: Fix CRC and OFDM formats, add option to `header_buffer` to read
  bits lsb first, and refactor `extract_bits` functions as templates.
- Constellation Sink uses different colors for each input by default.
- Rework Constellation Soft Decoder, Constellation Object and LDPC Decoder Definition.
  Previously, the LDPC Decoder did not work at all. The `sigma` parameter was removed
  from the decoder and an optional noise power `npwr` parameter was added to the
  constellation.

#### gr-network
- Better support for vectorized output from UDP source. The payload size must still
  be a multiple of `item size * vector size` for this to work.

#### gr-qtgui
- Range widget `eng_slider` and `eng` modes can now be selected in GRC.
- Range widget and a couple of UHD apps now accept values on `editingFinished`, e.g.,
  loss of focus, rather than on `returnPressed`. Since UIs generated by GRC do not
  have OK/Apply for such values, there is no "correct" behavior. The behavior is
  now selectable on the Entry widget.
- Frequency Sink startup time improved where sample rate is low

#### gr-soapy
- RTLSDR buffer size may be specified

#### gr-uhd
- RFNoC NullSrcSink block added. The block may be both source and sink.
- Add support and examples for RFNoC loopback.
- RFNoC Rx Radio adds `issue_stream_cmd()` and block message handler.

#### gr-zeromq
- Explicitly shutdown and close source/sinks to prevent hangs in some cases.
- Require `zmq.hpp` (cppzmq) version with `context_t.shutdown()` defined.
  If `shutdown` is not defined, the `gr-zeromq` is disabled.

#### Modtool
- Add `cmake-format` support for generated modules

#### Build system and packaging
- Update Read-the-docs config to include build.tools

#### Testing
- Change Debian 11 to Debian 12 in CI

(ham/gnuradio-core) and others listed below. Updated to 3.10.7.0

# Changelog
All notable changes to GNU Radio will be documented in this file.

The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
and this project adheres to [Semantic
Versioning](http://semver.org/spec/v2.0.0.html), starting with version 3.7.12.0.

Older Logs can be found in `docs/RELEASE-NOTES-*`.

## [3.10.7.0] - 2023-07-15

### Changed

#### Runtime
- Setting the minimum buffer size should have the desired effect now, and
not be overwritten. NOTE: the value returned by min_buffer_size() is not
intended to indicate the actual buffer size. Header Payload Demod was the
only block attempting to use this value, and was corrected.
- Use a set to store thread group (more efficient)
- Message Debug can now output via the logging system
- The field prefs.singleton is no longer externally exposed (was unintentional)
- PMT dict can be generated more easily using pmt::dict_from_mapping()

#### GRC
- Save changes under all exit conditions (a couple were previously missed)
- Prevent silent Generate/Run failures for unsaved flowgraphs

#### Testing
- Add Fedora 38, using the clang compiler
- Remove EOL Fedora 36

#### gr-analog
- C++ code generation for Quadrature Demod
- Add max_gain parameter for AGC

#### gr-blocks
- Probe Rate adds a name parameter, for clearer logging
- Selector has a new "sync" more that consumes the same number of items from all
inputs. Default is now to consume as many items as possible from the active input,
and no more than that many items from other inputs. The previous behavior was, well,
broken.
- Throttle reset item count on restart, to avoid long delays

#### gr-digital
- Constellation Encoder and Decoder: constellation can be changed at runtime

#### gr-filter
- Filter design tool: multiple improvements in bounds checking and exception handling
- Filter design tool: update QMessageBox to work in Qt5

#### gr-network
- Multiple memory management errors fixed in UDP Source/Sink and TCP Sink


#### gr-soapy
- Better AGC and gain behavior in RTL, AirspyHF and SDRPlay blocks
- Support bias controls in RTL and SDRPlay blocks

#### gr-uhd
- Remove possibility of infinite recursion for network overruns
- Support fmtlib v10
- RFNoC: bindings and block yml for Vector IIR, Replay and Log Power blocks
- RFNoC: add S16 format to RX Streamer

#### gr-vocoder
- Support additional codec2 modes

#### Modtool
- Don't override user-defined CMAKE_INSTALL_PREFIX

(ham/gnuradio-core) Updated 3.10.5.1 to 3.10.6.0

## [3.10.6.0] - 2023-03-31

### Changed

#### Runtime
- Add Python loggers to top_block and hier_block2
- Change the default log level (in the config file) to INFO instead of DEBUG
- Logging improvements in the scheduler
- Correctly determine native page size for Windows

#### GRC
- Fixed: opening the source of a hierachical block using the toolbar button produced an error
- Use the logger, instead of print statements, in generated top blocks
- Remove libX11 load from generated Python code - this was unncessary and produced warnings
- Choose Editor dialog stays above parent

#### gr-analog
- Signal Source: option to hide the message port

#### gr-blocks
- Throttle: supports max time or number of samples per work iteration, useful for reducing latency at low sample rates
- Delay block: option to hide the message port
- File Meta Sink: fix missing Python import in template code

#### gr-channels
- Default taps should be 1.0, not 1.0 + j1.0

#### gr-digital
- Async Decoder: several changes to improve performance robustness (see the commit log for more details)

#### gr-fec
- Tagged Decoder: correctly calculate the frame size for terminated CC decoder

#### gr-filter
- Fixed reverse parameters in fir_filter_with_buffer and pfb_arb_resampler, which could cause crashes
- Fixed PFB Arbitrary Resampler was ignoring attenuation parameter

#### gr-iio
- Set gain mode as specified (was always manual)
- Use the specified gain parameter for second channel (was same as first channel)

#### gr-qtgui
- Histogram Sink: calculate range of bins correctly to avoid strange distributions
- Save (to image) dialogs add file extensions and have a Save button (i.e., they work now)

#### gr-soapy
- Sources: add tags when the frequency changes

#### gr-uhd
- Support for more RFNoC blocks
  - Fosphor, which produces data to drive an on-screen, OpenGL-based renderer which is expected to be in the next release
  - Moving Average
  - Switchboard
  - Split Stream
- FFT: add properties for direction, magnitude and scaling
- RX Stream: flush after timeout
- Fully support multi-channel TX/RX (params were available for one one channel)

#### gr-vocoder
- Add a number of new codec modes for Codec2 and FreeDV

#### gr-zmq
- Selectable bind/connect to support more flexible ZMQ patterns and NAT'd networks
- Stream sources produce when available, instead of waiting for a buffer to fill, helping with latency

#### Modtool
- Use interp and decim keywords correctly when generating blocks

#### Build system and packaging
- Uninstall removes icons and desktop files

gnuradio: updated to 3.10.5.1

Release v3.10.5.1

Some important blocks turned out to be broken in 3.10.5.0. This unscheduled release fixes those regressions and includes a small number of other cleanups and fixes. v3.10.5.1 is intended to be ABI compatible with v3.10.5.0. We'd still recommend rebuilding dependent packages, if possible.

Changed

Runtime

Restore the ability to set a default block buffer size using the buffer_size parameter in the config file. This was lost during refactoring in v3.9.
GRC

Add Python snipped hook point at "init before blocks", right before blocks are instantiated.
gr-audio

Remove support for OSX 10.3 and earlier.
gr-digital

Make tags visible to subclasses of OFDM Frame Equalizer.
gr-dtv

Correct constant in DVBS2 Modulator.
gr-fec

Fix errors in Channel Construction AWGN
gr-iio

Fix IIO blocks, which were broken due to a build-time dependency problem.
gr-network

Fix crash in UDP Source when buffer overruns.
gr-qtgui

Remove support for QWT 6.0 and earlier.
gr-uhd

Add async message port to USRP Source and publish overflow notifications.
Add bindings and example for RFNoC AddSub block.

gnuradio: updated to 3.10.5.0

3.10.5.0

Runtime

Python block have access to the block logger, as in C++
Default log level changed to INFO (from OFF)
Memory-based logger gr.dictionary_logger_backend() added for log debugging
API Note: The Python block gateway is now completely implemented in the PyBind11 wrapper, in order to clean up Python dependencies. This is technically an API change, but should not have any external effect.
PMT serialization of Complex32 vectors is now REAL | IMAG on all platforms
Python IO signature replication (multiple ports specified by one signature) fixed

GRC

Continue processing block connections after a connection error occurs
Drawing/scaling fixes that improve user experience on HiDPI and Windows machines

Build system and packaging

Many deprecation warnings fixed
Make target link libraries PRIVATE wherever possible, removing unnecessary downstream dependencies
Add Fedora 37 and drop Fedora 35 CI targets
Conda re-rendered with more recent packages - thanks to Ryan Volz for making Conda an easy-to-use, cross-platform method of installing GNU Radio
Debian and Fedora packaging specs are no longer included in the code base, since they were out of date, and are maintained by downstreams

Testing

Code formatting rules for clang format updated to v14
Removed all compiler warning suppression
Enable Python block testing for Conda on macOS
Many other improvements that make maintenance easier - thanks again to Clayton Smith. In the process of fixing tests, a number of latent bugs were fixed throughout the code.

gr-analog

AGC3 performance and bug fixes
Python has access to control_loop parent class in PLL blocks
CTCSS detection of standard tones improved by fixing floating point comparison

gr-blocks

Probe Signal cross platform reliability improved by better thread synchronization

gr-digital

CRC32 and CRC16 blocks use little-endian order regardless of host order. This is a wire format change. The options were to have different endian machines unable to communicate, or older and newer versions unable to communicate. Note that there is a more general set of blocks (CRC Append and CRC Check) that are recommended for use wherever possible.
Packet headers use consistent bit order across machines
Floating point/rounding fix in constellation lookup table

gr-fec

LDPC G matrix n and k can be access from Python
LDPC matrix output size calculation corrected
CCSDS/Viterbi path metrics overflow fix

gr-network

Improve UDP Source/Sink efficiency by removing a layer of buffering and using the GR circular buffer instead of the Boost equivalent

gr-qtgui

Fixed Python code generation for Msg CheckBox, Digital Number Control, Toggle Button, Toggle Switch

gr-soapy

Sources will generate rx_time, rx_freq and rx_rate tags, as in UHD sources, where supported by the underlying Soapy driver

gr-uhd

Re-enable uhd.find_devices(), in addition to uhd.find()
RFNoC: generate correct Python code when using clock/time source
RFNoC: allow specification of adapter IDs for streamers
RFNoC: enable setting of vlen and types for streamers
RFNoC: streamers pay attention to stream args
RFNoC: sync block controller with gr-ettus OOT
RFNoC:set_property() and get_property() added to the C++ and Python APIs
RFNoC: Python binds added for rfnoc_block_generic

gr-zeromq

Sinks will optionally block on full queue, providing backpressure. Previously, overflow data was dropped.

gnuradio: updated to 3.10.4.0

3.10.4.0

Project Scope

Replace get_initial_sptr() calls with make_block_sptr() calls. There were a number of places the incorrect function was being used.

Runtime

Use correctly typed arguments to log messages to prevent build errors.

GRC

Add xfce4-terminal and urxvt to the list of terminal emulators discovered during the build process.
Suppress GUI hint errors that were being shown in the terminal window.
Use integers for screenshot size (floats were causing Cairo errors).

Build system and packaging

Reformat cmake files and make cmake formatting part of the workflow.
Allow GNU Radio to be a part of other cmake-based projects.
Correct linking to libiio and libad9361 on macOS.
Update method for determining Python installation directory. This should work correctly now on (all?) distro releases.

gr-blocks

New Block Interleaver/Deinterleaver interleaves blocks of symbols
Correct calculation of items_remaining in File Source, which allows seek() to work correctly.
Add an example for Wavefile Sink

gr-digital

Deprecate the CRC32 and CRC16 blocks, which will be removed in the future. There are more general CRC blocks which do the same thing (and more).

gr-filter

Fix demo for PFB channelizer

gr-iio

FMCOMMS2 Sink assumes CS16 data is scaled to 32768, rather than 2048.
FMCOMMS2 returns the correct samples for the second channel in 2-channel mode.

gr-trellis

Correct Python bindings for trellis::metrics.

gr-qtgui

Range widget can now output messages when value changes.
Add C++ code generation for Time Sink
Regenerate Python bindings for some blocks when necessary.
Waterfall Sink correctly uses half spectrum for float input.

gr-uhd

Add Python bindings for the UHD find() functino.

gr-zeromq

Support newer get() and older/deprecated getsockopt() functions in cppzmq depending on availability.

Modtool

Parse IO signatures with or without gr:: prefix.

Documentation

Update certain file lists to keep build paths out of documentation.

Testing

Update Conda recipe for Qt 5.15 and re-render CI support files.
Add testing on Ubuntu 22.04.
Link tests directly against spdlog with not linking to GR runtime.
Ignore Python "missing whitespace after keywork" formatting error.

(ham/gnuradio-core) Updated 3.10.1.1  to 3.10.2.0

## [3.10.2.0] - 2022-04-09
### Changed
#### Project Scope

- Clayton Smith continues the effort to replace Boost usage with
  modern C++ equivalents. In a related effort, he has continued the
  logging modernization started by Marcus M端ller. In his spare time,
  he has tackled some tricky, intermittent CI failures, some of which
  turned out to be real bugs. Much of this work is invisible to end
  users, but is extremely useful in making GNU Radio more reliable and
  maintainable. Special thanks are due to Clayton for a lot of hard
  work this cycle.

- Use exceptions instead of `exit()` in several places.
- Fixed a variety of Python deprecation warnings.

- Packager note: `jsonschema` is required for the JSON Config and YAML
  Config blocks. Those blocks will be disabled if `jsonschema` is not
  found.

#### gnuradio-runtime
- Correct size/usage for single-mapped buffers (part of the new Custom
  Buffers feature).

- Correct buffer size allocation. This was actually the single change
  in v3.10.1.1, which did not get its own CHANGELOG entry.

#### GRC
- Improve discovery of xterm and related programs.

- Save generated hierarchical block code to the block library instead
  of the directory containing the current GRC flowgraph.

- New JSON Config and YAML Config blocks that load configuration
  variables from files at runtime. Those variables may then be used in
  block parameters.

- Store the GNU Radio version in flowgraph metadata when saving.

- Minor change in Python evaluation code to allow `affinity`,
  `minoutbuf` and `maxoutbuf` to be adjusted via script parameters.


#### Build system and packaging
- Require C++-17 for `gnuradio-runtime` and code compiled against it (via cmake flags).
- Add `pythonschema` to build- and run-time dependencies.

#### gr-blocks
- Add exponential distribution to Message Strobe Random block's `delay` selection.
- Quiet down debug messages in File Sink.
- Skip alignment check in File Source when the input file is not seekable (e.g., it is a pipe).

#### gr-filter
- Fix crash in Rational Resampler logging

#### gr-digital
- Add generic CRC blocks: CRC Append and CRC Check.

#### gr-qtgui
- Improve text/background color on Range widget.
- Digital Number Control emits message with new, instead of previous, value.

- Message Edit Box  sends message only when return  is pressed, rather
  than whenever focus is lost.

- Vector Sink allows legend to be disabled.
- Type error fixes (Python 3.10 is stricter about int casting).

#### gr-trellis

- Provide Python bindings for PCCC Encoder and Viterbi Combo.

#### gr-vocoder

- Add C++ generation support to gr-vocoder

#### Code generation tools

- Support strongly-typed enums in Python bindings

gnuradio*: update to 3.10.1.1

Bugfix release for the 3.10.x.y release series.

gnuradio: update to 3.10.0.0

- gr-pdu: Protocol Data Units library
- gr-iio: Linux industrial I/O library (but not packaged in pkgsrc)
- Custom Buffers Support
- switch from Log4CPP to spdlog

gnuradio*: update to 3.9.4.0

Minor update bringing C++ code cleanups, bug fixes
and some performance improvements.

gnuradio-*: update to 3.9.2.0

Changed
 SoapySDR support (gr-soapy)
GRC
  Parameter expressions and/or values can be displayed in blocks on the flowgraph. Previously, only values were displayed. Look for the "Show Parameter ..." toggles under the View menu.
  Deprecated blocks are shown in a distinct color (orange), and the optional deprecated property has been added to block yaml
  Dark theme works better, especially for parameter fields
  Vector length is now correctly applied to all input ports
  Validation has been improved. Raw types are validated. Port connections are checked by type rather than by item size.
  Variable names that cause name conflicts in Python code (e.g., with package names) are rejected
  Bus logic fixes
  Blocks can no longer be dragged off the screen and lost forever
gnuradio-runtime
  Remove pmt::pmt_* functions, which were not actually implemented. This is technically an API change, but any use of the API would have resulted in a link error.
  Remove Python bindings for internal buffer functions
gr-analog
  Added an example for PLL Frequency Detector
  Better names for parameters in PLL GRC blocks
gr-blocks
  Consistent naming for Vector Length parameter in GRC blocks
  count_bits uses VOLK popcnt for better performance (used for example in the Correlate Access Code block)
  Rotator block phase increment parameter is controllable via a message, and a tag can be added at the point where the increment is adjusted
gr-digital
  MPSK example updated to use a Linear Equalizer (replacing deprecated block)
gr-filter
  Filter Delay documentation improvement
  Interpolating FIR filter can generate C++ code
gr-dtv
  VL-SNR bugs fixed (incorrect constants).
gr-qtgui
  Improve autoscaling for vector sinks
  Fix floating-point resolution problems in several widgets, due to interpretation of PMT doubles as floats
gr-uhd
  Add policy enum to Python bindings for tune_request
  Additional time spec options on UHD blocks (PC Clock on Next PPS, GPS Time on Next PPS)
  Fix up code that was generating warnings
  Fix command handler logic to apply commands from messages to the correct channel
gr_filter_design
  "File/Save" is disabled until the taps have been computed, and the GUI is reset after a save, to make it clearer which data is being saved.
  Entries are hidden for parameters that do not apply to the selected filter type.
  Save window type as an integer instead of a Python enum name
gr_modtool
  Improve validation of module and block names
Build System and Infrastructure
  Improved messages related to dependencies MPIR and GMP. Only one of these packages is required, and the previous error messages were confusing.
  Cleaner builds for Windows and Conda. A number of general cmake improvements have resulted from this work.
  In-tree packaging files for DEB and RPM, used with Launchpad and COPR
  Added man pages for GNU Radio tools
  Test code generation for all in-tree GRC examples
  In GrPybind.cmake, PYBIND11_INCLUDE_DIR (incorrect) was changed to
  pybind11_INCLUDE_DIR

gnuradio-*: update to 3.9.1.0

Changed
  C++14
  C11
  VOLK now “regular” dependency, not in-tree submodule
  numpy now also a CMake-checked hard dependency for Python support
  Exception Handling: throw by value, catch by reference (clang-tidy check)
  C++11: Emplace in vectors where you can; brings performance boni, but not included in clang-tidy-checks
  An exception-throwing block will now terminate the flow graph process, configurable through top_block
  gr-utils cleanup, folder restructuring
  config version checks installed CMake file will accept “at least this version” now
  PyBind11 replaces SWIG
  Full tree conversion from SWIG to Pybind11 bindings
  Doxygen now uses MathJax, full LaTeX installation no longer required
GRC
  start flowgraph in folder where it resides
gnuradio-runtime
  When calculating offsets in non-integer rate FEC, lround
  default seed for gr::random now actually as documented time-dependent
  loggers moved from gr::block to gr::basic_block
  PMT serialization
  PMT dicts no longer indistinguishable from pairs
  PMT symbol hashing no longer suffers under oddball own implementations
gr-audio
  Increased ALSA buffer nperiods
gr-blocks
  add, add_const VOLK’ized, templated
      this seems to break things in other places, even if it proves to be mathematically identical
  wavfile infrastructure: libsndfile now dependency
gr-digital
  transcendental block: default to 32 bit float complex, not double
  Linear equalizer: separate adaptive algorithm, allows for using e.g. trained sequences instead of the classical LMS, CMA
  DFE: better structure for decision history
gr-dtv
  LDPC encoder: template functions instead of #defined macros
  LDPC encoder: smaller tables through uint16_t for index tables
gr-fec
  API uint8_t, not char
gr-fft
  FFT blocks/functions templatized
gr-filter
  logging format
  rational_resampler_base -> rational_resampler
gr-uhd
  Required UHD version bumped to 3.9.7
  logging format

Deprecated
  gr-analog
    sig_source: freq port will be removed in the future
  gr-audio
    audio-sink, -source: Windows audio sink/source deprecated, the portaudio
      sink/source works even better under windows anyway
  gr-digital
    In favor of symbol_sync, deprecate:
      clock_recovery_mm
      msk_timing_recovery
      pfb_clock_sync

Added
  C++ Generation all over the place
  PyBind bindings + generator
gnuradio-runtime
  block_gateway: set_max_output_buffer
  GR_PREFS_PATH environment variable sensitivity to configure the path to the
    config file
  gnuradio-config-info --print-all
GRC
  option to toggle ID visibilities globally
  Validation check for QT GUI hints
  Python snippets
block header parsing tool
  block header parsing tool (GSoC 2019)
gr_modtool
  option to convert blacklisted files
gr-analog
  sig_source: cmd port adds support for dicts, setting of frequency, amplitude,
    offset and phase parameters
gr-blocks
  selector now has control message ports
  Rotator-based freq shift convenience wrapper
  Message-to-Variable and vice versa blocks
  DC Spike removal
  IQ Swap
  Complex to interleaved char / short: scaling option
  Delay block: control message port
  Phase Shift block with message port
  wavfile_sink, _source can now deal with a lot of audio formats: uncompressed
    WAV/AIFF, µ- and A-law compressed audio, OGG/Vorbis, FLAC, even octave files
  Stream Demux, which demuxes streams according to lengths vector
  rotator: phase() getter
gr-digital
  OFDM: multiple CP lengths
  ofdm_equalizer_simpledfe: enable_soft_output
  Constellation Encoder
  Constellation: normalization options
gr-fec
  {en,de}code_rs_8, {en,de}code_rs_ccsds: Reed-Solomon en- and decoders
gr-fft
  Windows:
    Gaussian
    Flat Top
    Tukey
  Window build() call now with default beta
gr-filter
  GRC: File taps loader block
  Low pass FFT filter convenience wrapper
  ichar / ishort decimator
  phase continuity for freq_xlating_fir_filter
gr-network
  gr-network: a whole new networking blocks module!
      TCP
      UDP
  Much better lockup/multithreading support than 3.7-era blks2
gr-qtgui
  Azimuth/Elevation plot
  Autocorrelation plot
  Compass visualization
  Dial control
  Gauge: dial, level
  Distance plot
  LED-like indicator
  Message-passing check box
  Message-passing numeric control
  Message-passing push button
  Toggle Button
  Eye sink
  Vertical slider
gr-uhd
  Filter API
  UHD 4.0 support
  Power Reference API
  Bidirectional setting messages on both sink, source
gr-vocoder
  Codec2 dev branch support
  FreeDV: In/output rates can differ
  FreeDV: text message output
gr-zeromq
  C++ GRC templates
  Tag filtering for tag-forwarding blocks

Removed
  VOLK is no longer a submodule
  Sphinx: consolidate into doxygen, or wiki-maintained block list.
  Python 2
  SWIG
  gru python module
gnuradio-runtime
  circular_file.cc
  math/common_factor.hpp
gr-blocks
  bin_statistics_f
  log2_const
gr-digital
  PFB clock sync: set_taps
  deprecated old OFDM infrastructur
    ofdm_frame_acquisition
    ofdm_frame_sink
    ofdm_insert_preamble
    ofdm_sync_fixed
    ofdm_sync_pn
    ofdm_sync_pnac
    ofdm_sync_ml
    ofdm_receiver
  digital_voice
gr-fft
  malloc_float, _double: rely on VOLK
  Goertzel: dtor superfluous
gr-filter
  deprecated window function duplicates (use them from gr-fft!)

Fixed
  CMake: Qwt, Log4Cpp detection
  ctrlport strings unicodified
  Freedesktop install script was not executed
  Redundant icons installed
  Path substitution on Windows was backslash-broken
  YAML definitions: more than I can count
  Cross-building: py interpreter at runtime != build time
gnuradio-runtime
  ctrlport: unholy stored reference to stack-allocated object removed
  Sine table generation for fixed point math
  gr_unittest: floatAlmostEqual had a lot of false passes due abuse of all()
  get_tags_in_range for delay < (end-start)
  Premature tag pruning
  release flattened flowgraph after stopping, fixes restartability/shutdown
    problem
  PMT serialization portability
  latency issue caused by setting block alias on msg block
  Windows logging errors
  ctrlport: Thrift >= 0.13 broke
GRC
  Tab widget ID visibilities
  A lot of YAML templates
  Default setting in qtgui chooser restored
  Boolean parameters no longer switch buttons
  Nested namespace handling
  Don’t rely on set ordering in tests
  configparser import
  input box color theme on dark themes
  Search box typing doesn’t inadvertedly interact with the rest of GRC anymore
gr_modtool
  Empty argument lists allowed
  Boost UTF replaced CppUnit, this needed to be done here, too
gr-analog
  wfm left/right, filters
gr-audio
  portaudio: lock acquisition was improper
gr-blocks
  Throttle now uses monotonic clock
  Tag debug only saved last work call’s tags
  File sink flushes on stop
  gr_read_file_metadata.py used to lose rx_time precision
  File source big file handling under Windows
  file_*: fseek errors used to be ignored
gr-digital
  map_bb: thread safety, buffer overflows
  additive_scrambler: reset was broken
  Constellation scalefactor wasn’t always initialized
  long-standing qa_header_payload_demux bug addressed by waiting for both RX and
    TX, not only either
  false triggers in correlate_access_code
gr-dtv
  rate mismatch in ATSC flowgraphs
gr-fec
  async_decoder Heap corruption
  cc_encoder: constraint length K > 8 led to wrong output
gr-fft
  thread safety of copy assignment/ctor
  log power FFT Python
gr-filter
  variable_band_pass_filter GRC complex taps input
  RRC filter gain for alpha = 1
gr-qtgui
  Remove copies of image data in returns by using move semantics
  Remove bogus overriding in drawing functions of plot_raster, _waterfall
  Edit MSG box: don’t require key to be set
  Don’t check for Python2 libs
  Number Sink ignored averaging setting
gr-uhd
  UHD apps: Py3 fixes
  USRP blocks: multichannel objects not properly populating channels
gr-video-sdl
  YUV formats fixed
gr-zeromq
  Don’t depend on deprecated ZMQ functionality
  Unhandled exceptions now handled, much calmer
  Avoid infinite blocking in tb.stop() by using ZMQ_LINGER

gnuradio-core: update to 3.8.1.0

Here is a very high level list of changes:

## Changed
### Project Scope
- C++11
- merged the wholeness of the `next` branch
- Dependency version bumps: CMake, GCC, MSVC, Swig, Boost
- New dependencies: MPIR/GMP, Qt5, gsm, codec2
- Removed dependencies: libusb, Qt4, CppUnit
- Python: Python 2 & Python 3 compatible. 3.8 will be the last Py2k-compatible
  release series
- gengen was replaced by templates (if you don't know gengen, don't do any
  research; save yourself that sorrow)
- Modern CMake (as far as feasible at this point)
- VOLK version updated to v2.0.0
- .clang-format file now dictates coding style
- clang-format'ed the whole tree.
- installed CMake files now tell about configuration

### gnuradio-runtime
- reworked fractional tag time handling, especially in the context of resamplers

### GRC
- C++ generation as option
- YAML instead of XML
- removed `blks2`
- much better canvas tooling
- consistent gobject usage
- ROUNDED ARROWS

### gr-qtgui
- moving from Qt4 to Qt5

### gr-utils
- `gr_modtool` now vastly improved

### gr-vocoder
- improved versatility
- removed in-tree libgsm, libcodec2, use system-wide libs

## Removed
### Project Scope
- Modules `gr-comedi`, `gr-fcd` and `gr-wxgui` are gone
### gr-comedi
- nobody could remember who used this, or for what. It has seen 0 active code
  contributions in the 3.7 lifecycle
### gr-digital
- python-based `packet_encoder` and related tools: Bugs that were sporadic and
  never fixed, so after long deprecation, we're removing it
### gr-fcd
- since it's currently untestable by the CI, it's being removed, as there was no
  code contributions. Generally, we strive to include all batteries with GNU
  Radio. Re-integration within a more general SDR interface would be desirable.
### gr-utils
- removed PyQwt (dead) based tools
### gr-wxgui
- Unmaintained, breaks on increasingly many systems, always was slower than
  Qtgui. We've been starting to tell people to migrate to Qt since at
  least 2015. Now, we're finally removing it.