Removed C5 references because it doesn't work with Mono.
Split out text editing from the gtk extensions.

- Added in NuGet references for dependencies and output.
	- Moved word splitter into MfGames.Languages.

- Reworked the entire command infrastructure to use MfGames.Commands.

- Removed C5 references because they don't work with the current version of Mono.
Merge branch 'master' into drem-0.1.0