Added video search constrained to YT username.
"user <username> / <query>"
added user configurable result set size
accept YT url or ID as argument to pl command
Merge branch 'youtube-id' into develop
Documented new changes
Fix issue with m4a audio dl with mplayer set (gh-52)
Implemented download range with dv and da (gh-49)
Update version number to 0.01.41
Added release date