Added glowing Polylines.
Merge remote-tracking branch 'origin/master' into glowingLines
Merge remote-tracking branch 'origin/master' into glowingLines
Switched to non-linear glow, per @pjcozzi suggestion, and simplified the code.
Cull polyline if width is less than 1.0.
Move polyline bounding sphere to surface in 2D to prevent incorrect culling by the near plane.
Reproject imagery in the vertex shader instead of FS.

This avoids fragment shader precision problems in mobile devices.
Issue #705 - Replace pseudo-private functions with file-scoped functions

First commit
Removed pointMC
Merge pull request #717 from AnalyticalGraphicsInc/positionMC

Removed positionMC from czm_materialInput.
Update CHANGES.md.
Merge pull request #683 from AnalyticalGraphicsInc/glowingLines

Added glowing Polylines.
Bump the version to b16 in advance of the upcoming release.
Slight optimization, and comment explaining approach.
Merge remote-tracking branch 'upstream/master'
semicolon not needed warning fixed
Updates based on review.
Fix my failure to increment properly.
Merge pull request #714 from AnalyticalGraphicsInc/reprojectInVertexShader

Reproject imagery in the vertex shader instead of FS.
Add polyline test for width of 0.0.