v0.2.0

Version 0.2.0:

* api: **Breaking**: Removed parameter names from mmk_mock_define.
* api: **Breaking**: Removed mmk_mock_vdefine (mmk_mock_define now accepts
  void as a return type).
* api: Added error handling for stub & mock creation.
* api: Added support for variadic functions.
* arch: Added ARM support.
* core: Fixed sym selector not working for elf and mach-o.
* doc: Added doxygen documentation in mimick.h.
* matchers: **Breaking**: Mixing matchers and non-matchers parameters
  is now unsupported.
* matchers: Added mmk_eq.