Alpha order  methods (within region)
Add BestMatchContentTypeId to find best matching list content type for a web content type
Arrange methods in alpha order
Add CreateDoumentSet(), add content type constants
Provide both CreateFolder methods as well as EnsureFolder
Add function to UploadFile that allows content type to be specified, and returns the File so that additional properties can be set.
Consolidate upload methods, mark variants that don't match object name as obsolete.
Return the list from CreateList.
Added JavaScriptExtensions Tests
Fixed issue with not loaded ID property breaking method due to logging requiring it.
Added FeatureExtensionsTests
Merge pull request #129 from erwinvanhunen/JavascriptExtensionsTests

Added JavaScriptExtensions and FeatureExtensions Tests
Merge remote-tracking branch 'contributor/DocumentSetSupport' into dev
Some documentation updates