Improved unit tests (test multi-part message handling)
Speed up unit tests
Added some doc
Added some doc + added support for writing to the serial port
Doc comments
Improved parsing of values not available in NMEA message
Added satellite system property (GPS/Glonass/Waas)
Completed xml doc comments
Addressed all code analysis warnings (note: Some minor breaking changes to follow naming guidelines)
Updated nuget packaging (include xml doc)
Added Xamarin iOS + Android support
Update README.md
Improved sample app
Sample app UI tweaks
Update README.md
Merge branch 'master' into ArcGISLocationProvider

Conflicts:
	src/NmeaParser.sln
	src/SampleApp.WinDesktop/MainWindow.xaml
	src/SampleApp.WinDesktop/MainWindow.xaml.cs
	src/SampleApp.WinDesktop/SampleApp.WinDesktop.csproj