openlayers/openlayers — comment on commit 6e9a3e4c13e00c29daf28efd92b63c2390e69231
File:  line 0
By elemoine:

This commit changes the API a bit. For example Map.addLayer used to return false when the layer was already in the map, it now throws an exception. I added notes in http://trac.osgeo.org/openlayers/wiki/Release/2.12/Notes to describe this new behavior.