Allow passing custom scene hierarchy to intersect#21

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kschzt wants to merge 3 commits intoborismus:masterfrom

vizorvr:custom-meshes

Commits on Jan 28, 2017

Allow passing custom scene hierarchy to intersect
Jaakko Manninen
committed

Commits on Jan 29, 2017

Check equality on mesh.id
Jaakko Manninen
committed
Remember the current meshes for the raydown re-raycast
Jaakko Manninen
committed