Updating dev Nuget.config
#3 - Add Count, Keys, and ContainsKey to IReadableStringCollection
Add an explict Count to IHeaderDictionary to resolve ambiguity.
#80 - Add CancellationToken to GetClientCertAsyc, GetFormAsync.
Make CancellationToken a default param.
Rename CancellationToken parameter.
Expand feature support for OWIN->K.
OWIN: Support dynamically creatable features.
Rename T to TFeature, Creator to Factory.
OWIN: #87 Make IHttpAuthenticationFeature.Handler not throw.
#89 - Rename OnRequestAborted to RequestAborted.
#69 Make auth APIs use IEnumerable instead of IList.
#88 Rename IHttpOpaqueUpgradeFeature to IHttpUpgradeFeature.
#91 Provide a default constructor for DefaultHttpContext.
#66 Add response writing extensions.
Fix rebase issue in tests.
Fix mispelled class name.
#96 Enable Owin->AspNet WebSockets.
#96 Enable AspNet->Owin WebSockets.
OWIN WebSockets: Cleanup, docs, extension methods.