Improved some debug prints of the mcu.
Fixed sub SP,imm instruction.
Disable tests on unsupported archs.
Add a list implementation.
Add first samd20 support
Fixed a wrong mov(3)
Run tests agains simulator.
WFI now puts the mcu into a sleep mode.
Fixed typo.
Add first parts of an simple vfs (simple file write/read api).
Add a simple log mechanism.
Workaround to no longer compile tests in non-test setups.
Expose strlen.
Added ability to disable logging source code location
Assert now logs a message.
Fix an error where arguments did not work while logging.
Malloc is now setup and functional.
list_for now can accept const lists.
Increased debug uart speed.
Fixed bug where samd20 printk did not respect the specified baud value.
Begain thread support. Seems to work but scheduler is missing.