SIGN IN SIGN UP

Remove unused `is*` properties (#9381)

* move is* properties to prototypes and remove unused ones

* rebuild

* merge dev -> less-is

* remove rebuild from PR
R
Rich Harris committed
4f98d35ed7ae8a1e028d231059c8a5f835f65d5e
Parent: bdea7d0
Committed by Mr.doob <info@mrdoob.com> on 7/22/2016, 9:45:50 PM