Omeka-s-tools

Major changes:

* `add_media_to_item()` now lets you supply a metadata payload so you can add whatever properties you want to the media file. You can also specify a template and resource class. This should be backwards compatible.
* If you supply a template id but not a resource class id to either `add_media_to_item()` or `add_item()` they will now apply the template's default resource class (if it has one) to the item. If you supply a resource class id, your value will override the template's value.

Fixes a bug that meant items weren't being added to the specified item set (1).

Added new methods for updating and deleting resources, as well as methods for managing templates. These include:

- add media to items
- add markers to items (assuming you have the Mapping module installed)
- prepare and upload a resource template that has been exported from another Omeka instance

Include `CITATION.cff` file and bump version for Zenodo.

Minor changes:

* the paths to media files can now be either strings or `pathlib` `Path` objects
* if no title is supplied for a media file, the file name will be used