* [EGD-2835] thread table based sms not read notifications
* [EGD-2835] removed redundant read field from sms db table
* [EGD-2835] clear unread status of a thread if thre thread is open
* [EGD-2835] updated database documentation
* [EGD-2835] added changelog
Add proper catch2 support:
- add catch2 as a submodule
- add cmake function to add test easily
- discover each test in test binary
- remove copies of catch.hpp
- do not try to process tests for rt1051
Do not test internals of utf8, only public interface (nasty bugs could
occur otherwise).
Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>
