Replaces DeveloperError(s) with Check(s) in Ellipsoid#5425

Merged

lilleyse merged 5 commits intoCesiumGS:masterfrom AnimatedRNG:ellipsoid-check

Jun 9, 2017

+17-31

Commits on Jun 5, 2017

Commits on Jun 6, 2017

Checks are now in debug areas; commented code removed
AnimatedRNG
committed

Commits on Jun 7, 2017

Deletes more commented code
AnimatedRNG
committed

Commits on Jun 9, 2017

Cleans up remaining commented code and other fixes
AnimatedRNG
committed