Klever

We have many annoying issues due to different versions of Python and its packages have different capabilities. Now its time to specify exact versions of Python and its packages that should work well for Klever. Users who will not follow recommendations will behave on their own risks. Nobody should use the most modern versions of Python and its packages for Klever. Of course it is recommended to set up a dedicated virtual environment for deploying Klever locally. One day I will fix deployment scripts as well - there is a corresponding task already.

Any update to newer versions of Python or/and its packages should be specified explicitly so that users will be aware that their environment is outdated. Of course, Klever should operate well within an updated environment.