Add heading setter for 2D and Columbus view.
Add set heading for 3D and get heading for all scene modes.
Add get/set tilt to camera controller.
Add tests for get/set heading.
Add tests for get/set tilt.
Update CHANGES.md.
Update Sandcastle to tolerate recent changes to Chrome.
Update error line number handling for Firefox & Chrome

Now a DeveloperError with a stack trace that includes your Sandcastle
code will highlight the line of your code from its first appearance
in the trace.  For example, try calling `primitives.add(undefined);`.
Remove commented out code.
Merge branch 'master' into headingTiltRoll

Conflicts:
	CHANGES.md
Merge pull request #1135 from AnalyticalGraphicsInc/chrome-sandcastle

Update Sandcastle to tolerate recent changes to Chrome.
Remove camera related functions and replace them with ES5 properties.
Merge pull request #1131 from AnalyticalGraphicsInc/headingTiltRoll

Heading Tilt
Fix doc typo
Make Cartesian3.fromArray and alias of unpack.
Make fromArray an alias of unpack for Cartesian2 and Cartesian4.
Tweaks and CHANGES.md
Merge pull request #1142 from AnalyticalGraphicsInc/missingTriangles

Missing Triangles
Fixed typo
Removed unused AMD includes