[Feature request] Allow Shape game object to be a mask

[rexrainbow]

createGeometryMask method only accepts Graphics game object to be a mask, but Shape game objects also could be a mask too, in my test. After changing type property to 'Graphics' for this line.

[photonstorm]

Thank you for submitting this feature request. We have implemented this and the feature has been pushed to the master branch. It will be part of the next release. If you get time to build and test it for yourself we would appreciate that.

[erwingame]

Good advice.