Trying to access Core.time crashes on neko

[TheMysticSword]

If you write Core.time in any of your classes and build on neko, you get this error:

Called from haxegon/Core.hx line 404
Uncaught exception - Invalid operation (-)

(looks like the Core.hx in this repo and in the haxelib version are a bit different. The 404th line is actually the 420th) https://github.com/haxegon/haxegon/blob/19fa0148930bd800dd5acdf580728ffffda2202c/haxegon/Core.hx#L420 I copied the newer Core.hx and it still gives the same error

Called from haxegon/Core.hx line 420
Uncaught exception - Invalid operation (-)