Merge with upstream:
- support for the OSTC 2 TR
- add support for dive computer filtering for device discovery
- various cleanups particularly to timestamp handling
- remove half-duplex emulation from the I/O api
* 'master' of git://github.com/libdivecomputer/libdivecomputer:
Remove the half-duplex emulation from the I/O api
Handle the half-duplex emulation in the vyper2 backend
Use the new timer for the timestamps in the logging
Use the new timer for the timeout calculations
Add a high resolution timer module
Add functions for converting bluetooth addresses
Add support for the OSTC 2 TR
Add a workaround for invalid logbook begin pointers
Let the ringbuffer function handle a full ringbuffer
Suppress the warning if no O2 sensors are present
Integrate the connect step into the open function
Implement some filter functions
Add suport for applying a filter function
Re-write the device discovery using the iterator api
Cleanup the iterator internals
c52becf6d4