* Rework middlewares, separate management to `MiddlewareManager` class
* Rework middlewares
* Added changes description for redis
* Added changes description for redis
* Fixed tests with Redis // aioredis replacement
* Changed msg.<html/md>_text attributes behaviour
* Added changelog for spoilers
* Added possibility to get command magic result as handler arguments
Upgrade architecture + 5.0 Bot API (#469)
* Moved `methods`, `types` and `client` to root package
* Removed update handler from routers to dispatcher
* Reworked events propagation mechanism to handlers
* Reworked inner middlewares logic (very small change)
* Updated to Bot API 5.0
* Initial migration from MkDocs to Sphinx + config for readthedocs
