Implement Citation-specific Options

[seboettg]

1. Disambiguation see http://docs.citationstyles.org/en/stable/specification.html#disambiguation
2. Cite Grouping see http://docs.citationstyles.org/en/stable/specification.html#cite-grouping
3. Cite Collapsing see http://docs.citationstyles.org/en/stable/specification.html#cite-collapsing
4. Note Distance see http://docs.citationstyles.org/en/stable/specification.html#note-distance