Delete extensions content.
Move all source files to /src/.
Update LICENSE.
Move all classes into its own corresponding folder.
Splitted all property classes into their own file.
Moved some classes around,
and moved all "UI" files to Classes/<CLASS>Node.u
Move UArray and UName to its own folder /Types/.
Splitted all table items into its own class files.
Merge Release-1.2.7.0