Log Message:
mitmproxy: Update to 6.0.2

Changes:
15 December 2020: mitmproxy 6.0.2
=================================
* Fix reading of saved flows in mitmweb.

13 December 2020: mitmproxy 6.0.1
=================================
* Fix flow serialization in mitmweb.

13 December 2020: mitmproxy 6.0
===============================
* Mitmproxy now requires Python 3.8 or above.
* Deprecation of pathod and pathoc tools and modules. Future releases will not \ 
contain them! (@Kriechi)
* SSLKEYLOGFILE now supports TLS 1.3 secrets (@mhils)
* Fix query parameters in asgiapp addon (@jpstotz)
* Fix command history failing on file I/O errors (@Kriechi)
* Add example addon to suppress unwanted error messages sent by mitmproxy. \ 
(@anneborcherding)
* Updated imports and styles for web scanner helper addons. (@anneborcherding)
* Inform when underscore-formatted options are used in client arg. (@jrblixt)
* ASGIApp now ignores loaded HTTP flows from somewhere. (@linw1995)
* Binaries are now built with Python 3.9 (@mhils)
* Fixed the web UI showing blank page on clicking details tab when server \ 
address is missing (@samhita-sopho)
* Tests: Replace asynctest with stdlib mock (@felixonmars)
* MapLocal now keeps its configuration when other options are set. (@mhils)
* Host headers with non-standard ports are now properly updated in reverse proxy \ 
mode. (@mhils)
* Fix missing host header when replaying HTTP/2 flows (@Granitosaurus)