Construct 3 r254

I would greatly appreciate these additions to the 3D and Mesh Editing functions:

- Add the ability to change multiple mesh points at once and/or fix the shift click distortion method messing up when going beyond the object's bounding box

- Allow for that shift click tiling method when manipulating the mesh at runtime (I'm working on a dirt bike game and want to include a level editor, but it always seems to stretch at runtime, even if I start the top of the mesh well inside the bounding box)

- Add the ability to add additional mesh points in-between points like we would sprite colliders

- Allow webgl effects on 3d objects (I have to have them on their own separate layer so I can use layer effects, and that for me causes clipping when a sprite from other layers goes under a 3d object)

- Add animations for 3d objects, so we can have different textures for those blocks.

- More complex 3d shapes maybe?

I love what you've accomplished recently for Construct 3, keep it up!