Merge pull request matplotlib#498 from DanielGoldfarb/master

completed kwarg descriptions for `mpf.kwarg_help()`

Merge pull request matplotlib#491 from DanielGoldfarb/master

Ability to sort kwargs alphabetically when calling `kwarg_help()`

Merge pull request matplotlib#416 from lfenzo/master

Descriptions in valid kwargs table and method `kwarg_help()` to print all kwargs information

fix error in 'Development Status' classifier

Merge pull request matplotlib#451 from AurumnPegasus/master

Set single candle color

Merge pull request matplotlib#462 from michalkucharczyk/linestyle-lis…

…t-accepted

plot: linestyle list is accepted

tag release v0.12.4a0