FLUID-4885: Added a fix for fixChildren. Children array otherwise gets corrupted if renderer is used in node.
FLUID-4885: Added a test case for the issue.
FLUID-4871: Includes ProgressiveEnhancement in npm module.
Merge branch 'master' into FLUID-4885
FLUID-4885: Updated test case to work with the new testing framework.
FLUID-4885: Converted remaining "instanceof Array" checks for consistency
Merge branch 'FLUID-4871'

* FLUID-4871:
  FLUID-4871: Includes ProgressiveEnhancement in npm module.
Merge branch 'master' into FLUID-4686
FLUID-4686: Started work on the builder and uiOptions accessors.