Factor out ol.source.Vector#addFeatureInternal
Add ol.source.Vector#addFeaturesInternal
Add ol.source.Vector#addFeatures
Use addFeaturesInternal in ol.source.Vector constructor
Change ol.source.Vector#removeFeatureInternal from private to protected
Clear null geometry features in ol.source.Vector#clear
Use addFeatures in ol.source.VectorFile
Merge pull request #1414 from twpayne/vector-api-add-features

[vector-api] Add ol.source.Vector#addFeatures
Set default canvas lineJoin and lineCap to 'round'
Merge pull request #1418 from fredj/vector-api-lineCap

[vector-api] Set default canvas lineJoin and lineCap to 'round'
Fix GeoServer format option param key

See http://docs.geoserver.org/latest/en/user/services/wms/vendor.html#format-options
Move serverType option to olx.source.ImageWMSOptions
ol.style.Image rotation is always defined
Add scale to ol.style.Image
Add scale to ol.style.IconStyle
Sort miscellaneous properties and add rotation and scale
Add image rotation and scaling to ol.render.canvas.Replay
Sort miscellaneous properties and add rotation and scale
Add image rotation and scaling to ol.render.canvas.Immediate
Export ol.source.wms.ServerType.*