Rebuilt alphatab/src from haxe source
Used AlphaTab dll instead of local cs project.
AlphaTab master fc7dd9e32e859dfe66af84d52366f779a9b6e9ef compiled from haxe with 'ant cs'
AlphaTab commit 2610e222c7bd555f41b7edd5f074034fc2559632 compiled in AlphaTab project
Dll moved to lib
Updated lowercase fields to new CamelCase properties
Patched Voice.cs Chain method and recompiled DLL
Fixed KeyNotFoundException on chord add.
Removed AlphaTab.Core folder
Merge branch 'LatestAlphaTab'

Conflicts:
	RockSmithTabExplorer/Services/RockSmithImporter.cs
	RockSmithTabExplorer/ViewModel/MainViewModel.cs