Test C# on AppVeyor.
[CI] time the commands
remove and ignore some neko bin
fixed empty tree .toString()
fix : use little endian storage
Compile hxcpp.n script for unit test
changed haxe.ds.Vector.get to return T instead of Null<T> (closes #3641)
Merge branch 'development' of github.com:HaxeFoundation/haxe into swift

Conflicts:
	.gitignore