CSL 1.0.2 support

[cormacrelf]

There are a bunch of new types/terms/variables etc, and a couple of little variable changes.

• [x] types
• [x] variables
• [x] terms
• [x] locators
• [x] String variables moved to number variables
• [ ] Addition to editor-translator behavior
• [ ] New Chicago page-range-format options
• [ ] Title variables now listed as a separate category
• [ ] Deprecation (will be removed in CSL 1.1)
• [ ] Removal of field category terms
• [ ] Check sub verbo => sub-verbo

[adomasven]

Zotero is moving on this front and we need to citeproc-rs to support it fully to be able to ship it as the default citeproc version.