Make it explicit that functions operate on tile sources
Add ol.source.TileSource.useTile
Implement useTile for image tile sources with caches
Mark all low resolution tiles as used to prevent cache expiration
Move useLowResolutionTiles from layer renderer to tile source
Avoid creating a TileCoord object when marking used tiles
Merge pull request #226 from twpayne/preserve-low-resolution-tiles

Preserve low resolution tiles
Remove examples/standalone dir
Merge pull request #227 from elemoine/removestandalone

Remove examples/standalone dir
Update comments in hosted examples loader
Merge pull request #228 from elemoine/fixcomments

Update comments in hosted examples loader
Fix bug/typo in projection.getTransform

Destination projection is currently using the source projection code
Merge pull request #231 from probins/projfix

Fix bug/typo in projection.getTransform
Space for linter
Unused var
Smoke test for ol.Projection.getTransformFromCodes
Stray debugger
Method for removing cached transforms
Tests for getting transforms

These are regression tests for #231.
Split TouchRotateAndZoom interaction.

Split TouchRotateAndZoom interaction into two new interaction:
TouchRotate and TouchZoom.