Added ol.source.TileUTFGrid
Incomplete getFeatureInfo implementation
Added UTFGridJSON to the TileJSON externs
Implementation of the ol.source.TileUTFGridTile_#getData method
The preemptive loading of UTFGrid tiles is now optional
getTemplate method to get the Mustache template from the TileJSON
Added TileUTFGrid example
Suppress warning about dot notation (compiler would report undefined properties)
Various code style fixes
Documentation blocks for the option members
Improved TileUTFGrid example
Listen 'mousemove' and 'click' rather than 'pointermove' in the TileUTFGrid example
More properties made private
Use null instead of undefined in the callback
Include correct path in error message
Doc fix regarding externs
Remove unneeded type cast
Uppercase ol.format.WFS.FEATURE_PREFIX const
Uppercase ol.format.WFS.XMLNS const
Uppercase ol.format.WFS.SCHEMA_LOCATION const