Improving doxygen documentation for files in DSP FilterLib, adding yaml file to Xcode project
Adding non-functional mute-solo effect, more work needed before it's ready for prime time
Fixing some typos from commit earlier today that caused weird doxygen formatting
Minor updates, cosmetics and doxygen
Implementing methods for setting and getting mute and solo settings, but they are not tested yet,
More work on mute solo - now works as a regular DSP external in Max
Adding some macros to the doxygen macros group
Adding comment from Skype session yesterday, eventually this will need to be included in Doxygen documentation, and probably we'll want a separate intro page on how to create extensions that use this as an example.
Merge branch 'feature/15-mute-solo' into dev
Fixing two errors discovered while developing implementation tests:

1) mute flag was not properly treaded as a boolean
2) solo flag was not properly treaded as a boolean
Ensuring that macro shows up in doxygen
Merge branch 'dev' into feature/api