Increases the version number to celebrate the fixing of a bug (!128 (merged)), and the introduction of more features (!126 (merged)).
Changes the version number to 2.1.0.
To be filled in by the reviewers
There are no unnecessary files present in the MR
The continuous integration has no problems with the MR
The MR is filled in as requested (including labels, milestones, and reviewers)
The documentation is up-to-date
!126 (merged) has been merged
!128 (merged) has been merged
