Stricter type def for ol.ImageUrlFunctionType
Stricter type def for ol.TileUrlFunctionType
Be stricter with types in BingMaps
Be stricter with types in WMTS
Remove unneeded FIXME
Detect iOS compass heading

iOS webkit does not provide an absolute alpha, instead it provides
webkitCompassHeading.
Merge pull request #992 from elemoine/urlfunction

Stricter with types
Rename externs/html5.js to externs/closure-compiler.js

Add add a fix for issues:
  * https://code.google.com/p/closure-compiler/issues/detail?id=1084
  * https://code.google.com/p/closure-compiler/issues/detail?id=1088
Fix rotate-north control display on touch devices
Merge pull request #986 from fredj/rotate-north_example

IE10 CSS compatibility: custom-controls example
Fix popover in icon example
Merge pull request #988 from fredj/icon_example

IE10 compatibility: no tooltip on icon.html example
Merge pull request #1 from fredj/deviceorientation-ios

Rename externs/html5.js to externs/closure-compiler.js
check iOS compass calibration via webkitCompassAccuracy

Ensure that webkitCompassAccuracy is not -1 as this indicates that the
compass has not been calibrated and its values cannot be trusted.
Merge pull request #993 from pagameba/deviceorientation-ios

Detect iOS compass heading