MSAL Python 1.15.0

• New feature: Now both initiate_auth_code_flow() and acquire_token_interactive() accept a new optional parameter max_age which is the allowable elapsed time in seconds since the last time the End-User was actively authenticated. If the elapsed time is greater than this value, Microsoft identity platform will actively re-authenticate the End-User. (#381, #389)
• Improvement: MSAL will now automatically utilize a backup authentication system, to provide better resiliency. (#376, #395, #409)
• Improvement: Previously, acquire_token_interactive() was not able to be aborted by CTRL+C when running on Windows. It is now fixed. (#393, #404)
• Bugfix: The http cache feature shipped in #379 came with an unexpected side effect to slow down the Device Code Flow. Now fixed. (#408, #410)
• Change: Adopting cryptography 35.0.0 (#414)