Convert one Dojo slider example to requirejs and HTML5.
Tweak styling for IE11.
Clamp values passed to acos.
Update CHANGES.md.
Merge remote-tracking branch 'origin/master' into imagery-adjustment
Code cleanup.
Merge pull request #1800 from AnalyticalGraphicsInc/imagery-adjustment

Convert one Dojo slider example to require.js and HTML5.
Merge pull request #1803 from AnalyticalGraphicsInc/saferTrig

Clamp values to [-1,1] before calling acos.
Merge branch 'master' into animation-collection

Conflicts:
	CHANGES.md