Release 0.1.1

[rayluo]

Each of the sub-PRs included in this release has been tested, reviewed and approved in their individual PR. The purpose of this all-in-one release PR is to organize the release process. Please review/proof-read the following release notes.

Release Notes:

• Adjust implementation to work with upstream MSAL 0.4.1 (Non re-entrant lock blocking extension use with msal>0.4.0 #26, Removing FileTokenCache.add overload. #27).
• Other minor patch(es) (Mark msal 0.5.x as compatible with the extension. #28)

If you prefer to, you can install this branch for your smoke testing:

pip install git+https://github.com/AzureAD/microsoft-authentication-extensions-for-python.git@release-0.1.1