Troveharvester

Forgot to create a release for v5.0, so this note includes changes for v5.0 and v5.1.

- Now using [trove-query-parser](https://github.com/wragge/trove_query_parser/) to parse urls (this introduced [a bug](https://github.com/GLAM-Workbench/glam-workbench.github.io/issues/62) which is fixed by v0.5.1)
- Removed Pandas warnings

Fix for issue 3.

Bug fixes:

* `image` and `include_linebreaks` are now passed correctly to the `restart` function. Thanks gcuth for the fix!

Updated to work with the new Trove interface. Added an option to save articles as images.

Quick fix to handle newspaper articles in Trove that don't have a title.