LtiLibrary (my .NET library for LTI applications) is now at version 1.5. This coincides with IMS releasing the LTI v1.2 and LTI Outcomes v1.0 Final Specifications, http://www.imsglobal.org/lti/.
LtiLibrary 1.5 also supports Content-Item Message v1.0 Public Draft (3 February 2015) and parts of LTI Outcomes Management v2.0 Public Draft (15 December 2015).
LtiLibrary now comes in two parts: LtiLibrary.Core and LtiLibrary.AspNet. Both are available on NuGet,
The source code and samples are available on GitHub,
And the sample Consumer and Provider applications are running on Azure,
If you have any questions or comments about LtiLibrary, please leave them on GitHub.