MSAL Python 1.7.0

This version contains a bugfix. We recommend all customers to upgrade to this version and upwards. msal>=1.7.0,<2.

• New feature: A new initiate_auth_code_flow() & acquire_token_by_auth_code_flow() API, which automatically provides PKCE protection for you (#276, #255). (You are recommended to use these 2 new APIs to replace the previous get_authorization_request_url() and acquire_token_by_authorization_code().)
• New feature: A new acquire_token_interactive() (#138, #260, #282), comes with a sample (#283)
• Bugfix: Now MSAL Python can properly access those Refresh Tokens which were keyed slightly differently by different apps. (#279, #280)