Pass a replay group to ol.render.Event
Make ol.FeatureOverlay use replay group
Correct/improve dragbox docs
Document map options more thoroughly
Cleanup vector-labels example
Merge pull request #2241 from fredj/misc

Cleanup vector-labels example
Make ol.format.KML#readName method exportable
Make ol.tilegrid.TileGrid#getResolutions method exportable
Merge pull request #2218 from oterral/exports

Add exports
Add ol.Feature#clone
Merge pull request #2138 from probins/mapoptions

Document map options more thoroughly
Merge pull request #2242 from elemoine/feature-clone

Add ol.Feature#clone
Add ol.style.Icon#getImageSize
Add write support to KML format
Add export button to kml example
Add an exampleNS.strToBase64 function

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Base64_encoding_and_decoding
Use exampleNS.strToBase64 in kml example
Minor change to the example externs file
Create valid KML documents

Thanks @bartvde.
Add getRevision to api

The revision can be useful for instance to check if a feature has been modified so I'd like to see it in api.