(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.
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