Update .gitignore

Same .gitignore as in integration. Now ignores .doxyfile
Updated gitignore
Merge branch 'release1'
Merge branch 'mcu_timers' of https://github.com/theolind/mahm3lib into mcu_timers
Revert "Revert "Revert "Added delay.h to test_tc.c"""

This reverts commit 1c8caff4fc422ce3b286acd8895fbf27dff2e5a3.