* Add PEP 0 parser
* Add PEP 0 writer
* Add PEP 0 generator and authors override
* Add/update build and run
* Simplify `create_index_file`
* Special status handling
* Add constants for PEP related magic strings
* Prefer checking on class
* Add PEP.hide_status, use constants
* Remove comment from 2008 (current method works fine)
* Clarify intent of for-else loop
* Hook in to Sphinx (oops, missed when splitting out this PR)
* Rename AUTHORS.csv for clarity
* Sort and strip spaces
* Prefer `authors_overrides` name
* Add pep_0_errors.py
* Move author_sort_by to writer
* PEP init misc
* Split out Author
* Drop pep_0 prefix
* Pass title length as an argument
* Add constants.py to hold global type / status values
* Capitalise constants
* Capitalise constants
* Update PEP classification algorithm
* Extract static methods to module level
* Add emit_text, emit_pep_row
* Use constants in writer.py
* Sort imports
* Sort constants
* Fix sorting in historical and dead PEPs
* Extract static methods to module level
* Extract static methods to module level (parser.py
* Make Author a NamedTuple
* Fix author duplication bug with NamedTuples
* Revert to old PEP classification algorithm
* Define PEP equality