add picture fetch over for google search
Support commands with options in play plugin

This adds support for specifying additional options in the command config value
for the play plugin. Example:

play:
    command: /usr/bin/command --option1 --option2 some_other_option
Add multi-option command example to the play plugin documentation
Minor correction in the documentation for date queries.
add a test, replace urllibs , update help
Clarifying ImportFeeds' `dir` parameter
Merge pull request #775 from rafi/patch-1

Clarifying ImportFeeds' `dir` parameter
Clarify dependencies for RG GStreamer backend
MediaFile: fix deletion of FLAC image fields

This was a no-op before but raises an exception on Mutagen 1.23. This fixes
the behavior (I'm not sure if we were using it anywhere) and the failing test.
AIFF support (fix #250)

Thanks to @EvanPurkhiser, AIFF is now supported in Mutagen 1.23! Now we can
support it too.
Merge branch 'Lemutar-master'
Style and wording for Google Images (#766)
MediaFile: allow setting date fields to None
Merge pull request #767 from ghedo/play_cmd

Support commands with options in play plugin
Undo variable name obfuscation (#767)
Fix default config (#767)
Changelog for #767
Add Test case for flexattr removal (#779)
Add defaut value to formatted mapping dict.

This mimics dict get method behavior.
Merge pull request #782 from PierreRust/fixRemoveFlexAttr

Fix remove flex attr