Bibtexautocomplete

- Add `-p / --prefix` flag
- Add filtered down counter (with `-e` and `-E` options) to output
- Add warning for IDs given with `-e` and `-E` that don't appear in output
- Fix a bug when making output names for multiple files from a directory
- Fix script not installing on Windows CMD (6)

- Autodetect files in directories: now `btac folder/` will autocomplete all bib
files in the given folder, excluding `.btac.bib` files unless they are the
only files present
- `btac` with no arguments is now same as `btac .`
- Better indent option `--fi / --indent`, now supports using a number of
specifying with `_`, `n` and `t` for easier console input.
- Added a hint for timeout warnings
- Clarified some things in README

- Add common authors check when matching entries: if your entries has some
author field then entries will no common authors will be ignored and entries
with common authors will be boosted (5)
- Add sanity check for found URLs and DOIs, `btac` now queries them and follows
a few redirections to check they resolve to an existing page (5)
- Some prettier messages and resolve hints for connection errors
- Add `-S/--ignore-ssl` flag (4)
- Add some logic to dispatch crossref's `container-title` and unpaywall's
`journal-title` between `journal` and `booktitle` fields.

- Fix decoding error when opening utf-8 files on Windows (3)
- Add extra fields `query-url`, `query-response-time` and `query-status` to data
dumps file
- Added github actions

- Now also queries arxiv
- Normalize title before querying, should improve matches for title with special
characters
- Added `--dump-data` option

- Fixed a bug which prevented installation on python 3.8 (2)
- Dropped python 3.7 support (It didn't work anyway...)