Features

mitmproxy now requires Python 3.6!
Moved the core to asyncio - which gives us a very significant performance boost!
Reduce memory consumption by using SO_KEEPALIVE (#3076)
Export request as httpie command (#3031)
Configure mitmproxy console keybindings with the keys.yaml file. See docs for more.

Breaking Changes

The --conf command-line flag is now --confdir, and specifies the mitmproxy configuration
directory, instead of the options yaml file (which is at config.yaml under the configuration directory).
allow_remote got replaced by block_global and block_private (#3100)
No more custom events (#3093)
The cadir option has been renamed to confdir
We no longer magically capture print statements in addons and translate
them to logs. Please use ctx.log.info explicitly.

Correctly block connections from remote clients with IPv4-mapped IPv6 client addresses (#3099)
Expand ~ in paths during the cut command (#3078)
Remove socket listen backlog constraint
Improve handling of user script exceptions (#3050, #2837)
Ignore signal errors on windows
Fix traceback for commands with un-terminated escape characters (#2810)
Fix request replay when proxy is bound to local interface (#2647)
Fix traceback when running scripts on a flow twice (#2838)
Fix traceback when killing intercepted flow (#2879)
And lots of typos, docs improvements, revamped examples, and general fixes!