Add Zoomify stuff
Resize bad tiles + changed demo image (due to crossorigin problems)
Remove extra tiles.
Export ol.proj.Units.PIXELS
Update ol.source.Zoomify to use new exports system
Update ol.tilegrid.Zoomify to use new exports system
No need to use private variables in ol.source.Zoomify
Make options to ol.tilegrid.Zoomify optional
Don't check examples with PhantomJS that begin with // NOCHECK
Don't attempt to check Zoomify example with PhantomJS
Add optional parsersNS object to extend
Use ol.interaction.defaults in dragzoom example
Show how to use a custom style for DragZoom
More description to dragzoom example
Add ol.geom.MultiLineString#setLineStrings
Add support for gx:MultiTrack elements
Don't attempt to fit views to empty extents
Merge pull request #1424 from elemoine/vector-api-dragzoom

[vector-api] Minor additions to dragzoom example
Merge pull request #1426 from twpayne/view2d-fit-empty-extent

[master] Don't attempt to fit views to empty extents
Merge pull request #1425 from twpayne/vector-api-kml-gx-track

[vector-api] KML gx:MultiTrack support