Logging improvements(still not 100%), file restarts on file changes(needs tests), and more

[coder2020official]

Description

Include changes, new features and etc: Improvements in logging, file restarts, cached user property for async

Describe your tests

How did you test your change? Tested each change by myself, but file restarts on changes needs to be tested on other platforms as well.

Python version: 3.9.6

OS: Big Sur

Checklist:

• [ ] I added/edited example on new feature/change (if exists)

• [x] My changes won't break backward compatibility

• [x] I made changes both for sync and async

• Example is not created yet

[coder2020official]

#1634

[coder2020official]

List of things to do:

• [x] Create an example demonstrating usage of reload option for sync and async;
• [x] Add coloredlogs & watchdog & psutil to dependencies;
• [x] Resolve conflicts;
• [x] Update documentation

[coder2020official]

Still beta.