A bunch of fixes/tests
Created by: PhilipVinc
This is some commits that i had lying around plus a test for last night bug
- Adds a test for VariationalDriver bug #816 (closed)
- prettify the repr printing of History objects so they don't print every step stored in iters
- add a test for repr printing of history objects
- fix some docstrings on the website that had wrong formatting
- remove binder link from readme (that linked to old v2 anyway...)