- do not append /announce to tracker
- add -H --nodots option to disable copying of dotfiles after conversion
- add --a --additional option for passing mktorrent arguments
- fix race condition when creating output directories
- fix aacgain file extension
- change alac extension to .m4a
- revert os.cpu_count() change, not all python3's have multiprocessing
- properly escape replaygain commands
- formatting changes