commands: Use single quotes
docs: Move commands changes to top of changelog
audio: Change to software mixing by default
local: Ignore *.nfo and *.html when scanning
Merge pull request #583 from jodal/feature/software-mixing-by-default

audio: Change to software mixing by default
mpd: Make regexps work with re.VERBOSE
mpd: Remove redundant ^ from all patterns

re.match() only matches on the start of the line anyway.
mpd: Use same regexp flags everywhere
mpd: Reduce indentation of multiline regexps
mpd: Match just ' ', not any space char
mpd: Reformat query regexp
mpd: Move query_from_mpd_search_format into only module using it
mpd: Split out common query fields
mpd: Rename constants
mpd: Reformat list query pattern
docs: Improved file/option markup
mpd: Ensure quotes are matched
mpd: Sort search fields
mpd: Add note about use of re.VERBOSE
mpd: Remove redundant ^ anchor in example pattern