Add skeleton for SLD parser
Add scale to/from resolution calculations
Add initial pass of write support, always write out ol.style.Stroke as  LineSymbolizer
write out string concatenation in the more common way
Add more changes to the  halo functionality, introduce SLD defaults for symbolizers conform the SLD spec
add name and title to ol.style.Rule
get rid of the readers we don't support in ol3 symbology as yet
better write support for PointSymbolizer
deal with elseFilter, some cleanup
Add a separate test case for write
do not hard-code the namespaceURIs multiple times
override URL parameter values in the GetFeatureInfo request if someone provides a param in getFeatureInfoOptions with the same name
make sure parameter name lookups are case-insensitive
have the GML parser read and write out multiple geometry attributes with their correct name
Add ol.BrowserFeature.DEVICE_PIXEL_RATIO constant
Better canvas sizing handling (canvas and webgl)
Segment distance calculation fails when modifying points

By providing a segment even for points, we have less distinction
points between points and other geometry types, and are able to
do the segment distance calculation also for points.
Merge pull request #1306 from fredj/canvas-size

ol.BrowserFeature.DEVICE_PIXEL_RATIO and canvas size
Avoid clearing canvas twice
Merge pull request #1294 from bartvde/gmlgeom

GML parser should write out all geometry attributes and respect their names (r=@ahocevar)