First cut at DynamicScene/CZML WallGeometry support.
Merge branch 'master' into dynamicScene-wall-geometry
getIntervals should be intervals.
Merge branch 'master' into dynamicPath-crash
Merge remote-tracking branch 'origin/master' into dynamicScene-wall-geometry
Merge remote-tracking branch 'origin/master' into dynamicScene-wall-geometry
Add Rectangle support to DynamicScene

Still needs specs and cleanup.
Merge branch 'master' into dynamicScene-rectangle
Ongoing DynamicRectangle work

Fix type in CzmlDataSource
Add coordinates property.
Start refactoring Datasource interface

Manually extract all non-dataSourceBrowser specific changes out of the `dataSourceBrowser` branch.
Turn DataSource get methods into ES5 properties.
DynamicRectangle specs and cleanup.
Update CHANGES.
Merge remote-tracking branch 'origin/master' into dynamicScene-wall-geometry
Merge branch 'dynamicScene-rectangle' into dynamicScene-wall-geometry

Conflicts:
	Source/DynamicScene/CzmlDataSource.js
	Source/DynamicScene/DataSourceDisplay.js
Merge branch 'master' into dynamicPath-crash
Fix path visualization when using composite properties.
Specs and cleanup for DynamicWall.
Start of path subsampling specs.
DynamicPathVisualizer specs and fixes

Unit test a bunch of untested code and fix issues discovered.  There are still issues that need to be addressed.