Support reference preservation for ISerializable objects.
-Fixed tests
-Fixed exception message line breaks to use Environment.NewLine
Merge branch 'feature-iserializable-references' of https://github.com/Inverness/Newtonsoft.Json into Inverness-feature-iserializable-references
-Refactor
Merge branch 'Inverness-feature-iserializable-references'
Bug: Unexpected token: Comment

Can't deserialize json to XElement back if original XElement had a comment
formatting
Bug: unexpected token: Comment test case updated
Merge pull request #1 from yeroo/pr/429

Bug: unexpected token: Comment test case updated
-Refactor
Merge pull request #429 from yeroo/master

Bug: Unexpected token: Comment
-Cleanup solution files
-Fixed casting a nullable negative SByte value
-Fixed array XML documentation references
-Upgraded documentation to use latest Sandcastle
-Changed documentation conceptual references to links
-Tests
-Documentation
-Updated README.md with new logo location
Merge branch 'newtonsoft_master' into makrill