Added twi header and source files. Added register mapping in the header file.
Finished first API draft of TWI
Applied some changes according to the feedback from the architect manager
Added some functions in TWI c-file
First draft of twi.c
Finished writing twi_set_clocks function in twi.c file
Minor fixes to twi files
Minor fixes in twi.c
bla bla
some basic tests are now working
Merge branch 'twi' into integration
Merge branch 'integration' of https://github.com/theolind/mahm3lib into integration

Conflicts:
	src/test_runner.c