Bugfix: OAuthTokenCredential.GetAccessToken did not calculate the expiration correctly and never recognized an expired or expiting access token
New properties AccessTokenLifetimeInSeconds and AccessTokenExpirationCheckSafetyGapSeconds in OAuthTokenCredential
Merge branch 'master' of https://github.com/freeboarder/sdk-core-dotnet into pr_oauth
Merge branch 'master' into pr_oauth
Refactoring OAuthTokenCredential
Removing support for Visual Studio 2005