------------------
- Change the lockout response calculation to request flagging
instead of exception throwing in the signal handler and middleware.
Move request attribute calculation from middleware to handler layer.
Deprecate ``axes.request.AxesHttpRequest`` object type definition.
[aleksihakli]
- Deprecate the old version 4.x ``axes.backends.AxesModelBackend`` class.
[aleksihakli]
- Improve documentation on attempt tracking, resets, Axes customization,
project and component compatibility and integrations, and other things.
[aleksihakli]