Changed async continuation behavior for mono
New compliance test for SM re: auto-wired dep with another explicit dep in-place.
fixing up project ref's in Autofac testing, adding a nuspec for Autofac
adding the 'And' semantics to ChainPredicate.  Closes GH-449
closes GH-465
added the FilterAttribute.  Closes GH-457
making ToAbsoluteUrl() smart enought to allow absolute url's through
tweaking the ToAbsoluteUrl extension method so that it can handle open url templates
checkpoint:  added the OwinHost projects back in, seeded Katana, starting very slowly to work up new Cookie support
mapping the expires and httponly parts of a cookie
checkpoint:  can round trip Cookie from text to object to text
checkpoint:  implemented the new methods on ICurrentHttpRequest
checkpoint:  introduced HeaderValueSource, making all hosts use it, changed REquestDataHeaders to use the new headers
checkpoint:  compiling again after changing up ICookies
basic rake is clean, fixed cookie binding
all integration tests are passing
switched the integration tests to using Katana
integration tests completely passing against Katana
nuspec changes for Katana/OwinHost.  Closes GH-470, Closes GH-468, Closes GH-467
added the '_about' endpoint for development mode.  Closes GH-466