Updating user documentation

[AndreasThum]

Is your feature request related to a problem? Please describe.
New features are getting added, especially in version 2.0.x and as such the user documentation is out of date.

Describe the solution you'd like
The user documentation needs to be reviewed and updated to reflect new or changed functionality. The changelog can be used to see what was added/removed/changed

Describe alternatives you've considered
none

Additional context
none