Scrape amendment info

[tillprochaska]

This is a first attempt at scraping amendment info (subject, number, authors) for votes. You can try this locally by running:

htv system upgrade
htv temp vot-lists
htv aggregate votes

What’s still missing is the normalization of amendment authors. Amendments can have multiple authors, and the official data sources don’t list them in a consistent/systematic way:

• Newlines, commata, and spaces are all common as delimiters. Sometimes the delimiter is ambiguous.
• Sometimes only "committee" is given as an author, in other cases it’s the 4-letter abbreviation of the committee (e.g. AGRI).
• "MEPs"/"Members" is used interchangeably.

Ideally, I’d like to normalize this to something like this:

[
  {
    "type": "COMMITTEE",
    "committee": {
      "code": "AGRI",
      "label": "Committee on Agriculture and Rural Development",
      "abbreviation": "AGRI"
    }
  },
  {
    "type": "GROUP",
    "group": {
      "code": "EPP",
      "label": "European People\u2019s Party",
      "short_label": "EPP"
    }
  },
  {
    "type": "MEMBERS"
  }
]

For now, I’ve implemented very basic handling of authors which doesn’t handle all cases: