* Added support for LZ4 archives with the lz4 tool.
Closes: GH bug 46
* Use correct registry key flag for 32-bit Python on 64-bit Windows
when detecting 7z.
Closes: GH bug 35
* Fix configuration for listing .bz2 and .bz3 archives.
* Added support for the unar program which can extract a lot of
archive formats, for example ZIP, RAR, 7Z, TAR, GZIP, BZIP2 etc.
Closes: GH bug 39
* Document how to enable bash completion.
Closes: GH bug 127