Can be used to build docs and directly open them in the users default
web-browser:

	./Documentation/build-docs.sh --open

This reduces the power consumption of the system by around .1 mA when
the personal state is not active.

As a part of this, drop os/log.h.  Also add documentation for this.

Add an `os.fs_is_attached()` function to allow apps to check whether the
filesystem is available.

We have encountered a device where the connection from the PMIC's ADMUX
pin to the MCUs ADC is severed and thus the low battery check would
trigger immediately.

For making such devices still usable, add a config option to disable the
low battery check entirely.

Fixes: #227

With sphinx 3 a ton of warnings about unresolvable xrefs are generated.
Add a workaround to silence them.

Ref: https://github.com/sphinx-doc/sphinx/issues/8945

Update vendored hawkmoth sources to commit upstream
69cde0b2c5315e46bf431a4c7c8b92cf47a544a6.

Sphinx wants us to make the title underlines the exact same length as
the text above.  Fix all related warnings in our codebase.

Hawkmoth is not yet working with Spinx 3; issue a warning when detecting
a Sphinx 3 environment as the resulting docs will be broken.

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

Adds an option to write a btsnoop compatible log file containing BLE
traffic. A new file is created after each boot if BLE is activated and
the `ble_log_enable` option is set in `card10.cfg`. The last 10 logs are
kept via log rotation.

It's 44 years since the release of vi and sadly lots of editors still
don't care about trimming off trailing spaces ...

Signed-off-by: Rahix <rahix@rahix.de>

Kai authored 4 years ago and rahix committed 4 years ago

Original work from @sistason in MR !121, rebased
on latest master.

Commit 1ea42e8e
Author: Kai <sistason@sistason.de>
Date:   Mon Aug 19 21:58:11 2019 +0200

    Adds Docker for firmware-building

    This commit adds a Dockerfile to build a docker
    container to build the firmware with.  It also
    updates the documentation on how to do that.

Changelog:

    - packaging: upgrade development status to beta
    - build: remove FIXME about VERSION
    - test: cover additional macro cases
    - parser: simplify macro arguments extraction
    - Re-use the looked up cursor of a token.
    - test: cover cases of functions with no parameters
    - parser: fix documentation of non prototyped functions
    - doc: add example with preprocessor

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>