Bugfix: a reference cited with new text locked the database

• cite() found an existing citation only by its raw text. SEAMM's own citation
  holds its version in the text, so after an update it was inserted again and
  failed on the unique alias/DOI ("UNIQUE constraint failed: citation.doi"),
  leaving the transaction open. That held the database's lock: a resumed SEAMM job's
  parallel iterations then all failed with "database is locked" (SEAMM job 5366).
• Citations are now also found by alias or DOI, with their text brought up to
  date; a failed citation is rolled back; and connections wait up to 30 s for a
  lock, since the iterations of a parallel loop share the job's database.

Format books and other entry types

• Books were printed as "Do not have a handler for 'book'" followed by the raw record. Books now get an ACS-style citation, and any other entry type a readable generic one.
• Bugfix: format_software passed self twice to format_misc, so a software entry raised an error.

Require bibtexparser 1.x, and build on current Python

• bibtexparser is now pinned to 1.x. reference_handler uses
  bibtexparser.loads(), bibtexparser.load(), bibtexparser.bparser.BibTexParser
  and bibtexparser.bibdatabase, all of which were removed in bibtexparser 2.0, but
  the install requirements asked for a bare bibtexparser. Once 2.0.1 reached
  conda-forge, anything installing this package could pair it with a release that
  breaks it -- including every package that builds a bibliography through
  seamm.Node, which failed with
  AttributeError: module 'bibtexparser' has no attribute 'loads'.

• The package builds on current Python again. The bundled versioneer called
  configparser.SafeConfigParser() and ConfigParser.readfp(), both removed in
  Python 3.12, so pip install reference_handler could not even get as far as
  building. It is now the same versioneer the SEAMM packages use.

• Internal: the CI and Release workflows have been brought up to date. They used
  action versions whose runtimes GitHub has removed, and tested on Python 3.7 and
  3.8; they now test 3.11 and 3.12 on Linux and macOS. The test environment had an
  empty channels:, so nothing came from conda-forge. The code is formatted with
  black, matching the Makefile, and linted with it rather than yapf. Releases are
  published to PyPI with trusted publishing.

Internal release to fix CI problem.

0.9.1

Temporarily removing Windows from CI due to database persistence issues.

Improvements to formatted output.

Merge pull request #5 from MolSSI/improved_text

Improved text output in support of SEAMM

Initial working version

Merge pull request #2 from MolSSI/travis

Setting up Travis-CI, codecov, PyUp