thinktecture/Thinktecture.IdentityServer.v3 — pull request #310 by cendter (2014-08-26 12:33:07+00:00)
Title: fixes https://github.com/thinktecture/Thinktecture.IdentityServer.v3/issues/271

don't delete RefreshToken when using:

RefreshTokenUsage = TokenUsage.ReUse,
RefreshTokenExpiration = TokenExpiration.Absolute