Use a loop rather than tileRange.forEachTileCoord
Move closure out of loop, and use loop rather than forEachTileCoord
Remove forEachTileCoord
Structure DOM renderer code to be more similar to WebGL renderer code
Remove unused requires
Join short lines
Move var outside loop
Add function to chose renderer from query string
Update examples to read renderer from query string
Merge pull request #115 from twpayne/renderer-clean-ups

Renderer clean ups