v.2.1.1

Improvements:

1. Support for descriptors of version 101 was dropped.

2. Support for descriptors of version 59 and 102, 103, 104 was added.

3. From now on, used strict validation without any additional fields for create events

Bugs fixed:

How to update from previous version:

To update from previous version, replace all folders with files and update dependencies from requirements.txt.