restoreProcessorState() breaks locale-specific punctuation (and is
deprecated).
rebuildProcessorState() is enough if we're passing an empty citation
list; if we're reinitializing with a new non-empty list, call
updateItems() first.
Also:
- Add tests for this issue and for potential regressions in disambiguation handling
Contains a dummy doc plugin, which is useful for:
- Testing integration.js functionality
- Serving as succint documentation for development of new integration
plugins