Add tile queue
Don't attempt to share canvases between renderers, fixes #101
Improved reprioritization
Add empty descriptions to work around jsdoc
Re-add doc to precommit target, fixes #94
Clean up DOM renderer code for untested minor performance advantages
Prioritize and throttle texture uploads
Merge pull request #107 from twpayne/dom-renderer-clean-ups

Clean up DOM renderer code for untested minor performance advantages
Merge pull request #103 from twpayne/tile-queue

Tile queue
Merge pull request #104 from twpayne/debug-tile-source-fixes

Don't attempt to share canvases between renderers, fixes #101
Merge pull request #108 from twpayne/texture-uploads

Prioritize and throttle texture uploads
Merge pull request #106 from twpayne/re-enable-jsdoc

Re-enable jsdoc