Make v16.0 the default version for the project sources.
Make v16.0 the default version for the project sources.

eliasku/intellij-haxe,TiVo/intellij-haxe,TiVo/intellij-haxe,EricBishton/intellij-haxe,winmain/intellij-haxe,winmain/intellij-haxe,TiVo/intellij-haxe,EricBishton/intellij-haxe,eliasku/intellij-haxe,EricBishton/intellij-haxe,HaxeFoundation/intellij-haxe,HaxeFoundation/intellij-haxe,winmain/intellij-haxe,HaxeFoundation/intellij-haxe,eliasku/intellij-haxe