0.3

This release was mainly made for switching over to the new structure, where the develop branch may have submodules and the main branch must have a Makefile.

New in this release is the option for duplicate arguments and parameters, which is currently not tested (though 0.3 is still a pre-release). Allowing duplicates or not can be configured through two arguments for am_parse. To not allow any duplicates, not duplicate arguments nor parameters, call am_parse(argc, argv, 0, 0), which is tested to work.

Other new things are not directly noticeable for a user, specifically arguments-test-mini was merged into this repository, test-mini is now used, and get-makefile-for-* files are now removed (making the makefile-for-* branches obsolete but remaining for the sake of not breaking old commits).