ListView file was getting somewhat large, I wanted to split it up into separate files to make it easier to find the applicable datatype.

1, 2, 3, 7-11 etc

fetch_songs uses a series of regex expressions to filter out
"artist - title" combinations from mixed text input.

Old generate_playlist function only used random playlist names.
Defaults to random if no title is specified.

Extends mkp functionality by having it act on the --description parameter.

When the --description parameter is passed, the software looks through g.model for suitable datatypes. It will find the first applicable object based on numerical input from the user, download that videos description and parse it for artist - track combinations, and will store that in a local playlist using the existing generate_playlist functionality.

Adds mkp to the search helptext keywords, adds --description help text.

Changed some _len(varname) > 0:_ as this is the same as _if varname:_