argparse
- Added support for gathering remaining arguments #17
- Added support for actions without return values #39
- Deprecated print_help() #40
- Removed undocumented PARSE_ARGS macro #41
- Added .clang-format #43
- Switched to value semantics with #50 and #51
- Switched to doctest and parallel builds #53
- Arguments which start with '-' could be positional arguments #56