Make Fullscreen control use <button> instead of <a>
Minor cleanups
Use «em» based positioning
Css tweaks for touch devices
Restore `preventDefault` call that shouldn’t have been removed
Wording in description
Reorder default controls
Rename ol.Map#requestRenderFrame to ol.Map#render
Provide a default style function
Merge pull request #1731 from felixgirault/ol.source.zoomify

Add an alternative algorithm for zoomify tier size calculation
Merge pull request #1725 from tonio/a11y-enhanced-zoomcontrol

Enhance controls accessibility
Merge pull request #1669 from tschaub/default-style

Provide a useful default style.
Document tierSizeCalculation property
Use an enum for Zoomify tier size calculation option
Use a switch to select tier size calculation
Switch to asynchronous rendering by default
Handle asynchronous rendering in tests
Add ol.Map#isRendered
Only render overlays if the map is rendered
No WFS parser currently