[ANNOUNCE] libgpiod v1.3

[Bartosz Golaszewski <brgl@xxxxxxxx>]

libgpiod v1.3 has been released and is available at kernel.org[1][2].

A short summary of changes:

New features:
- the gpio-tools now have automatically generated (using help2man) man pages
  that are bundled with the release tarball
- support a singular 'default_val' argument in Line.request() in python
  bindings
- the test executable can now be installed to the bindir along with the
  gpio-tools and the testing framework will look for the binaries in standard
  locations if it's not run from the top source directory
- gpiomon now supports line buffered output

Improvements:
- tweaks to the C API documentation
- treewide unification of the naming of local variables
- extended helptest in gpioset (explanation of the way the character device
  works aimed at reducing user confusion when a GPIO line reverts to its
  default value after gpioset exits)
- the source directories have been rearranged and the src/ directory was
  dropped, lib/ and tools/ now live in the top source directory
- minor coding style fixes in python bindings, ctxless functions and tools
- automatically generated documentation is now removed by 'make clean'
- all Makefiles now use top_builddir instead of relative paths
- code shrink in configure.ac
- add a brief section about API documentation to README

Bug fixes:
- fix a segfault causing bug in C++ bindings
- make bitset_cmp::operator() const as this is required by C++17
- ignore 'remove' events from udev in the testing framework
- don't segfault on num_lines = 0 in ctxless functions

Best regards,
Bartosz Golaszewski

[1] http://ftp.iij.ad.jp/pub/linux/kernel/software/libs/libgpiod/
[2] https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/log/