v0.4.2

Changes:

• Added a CLI for downloading textacy-related data, inspired by the spaCy
  equivalent. It's temporarily undocumented, but to see available commands and
  options, just pass the usual flag: $ python -m textacy --help. Expect more
  functionality (and docs!) to be added soonish. (#144)
  • Note: The existing Dataset.download() methods work as before, and in fact,
    they are being called under the hood from the command line.
• Made usage of networkx v2.0-compatible, and therefore dropped the <2.0
  version requirement on that dependency. Upgrade as you please! (#131)
• Improved the regex for identifying phone numbers so that it's easier to view
  and interpret its matches. (#128)

Bugfixes:

• Fixed caching of counts on textacy.Doc to make it instance-specific, rather than
  shared by all instances of the class. Oops.
• Fixed currency symbols regex, so as not to replace all instances of the letter "z"
  when a custom string is passed into replace_currency_symbols(). (#137)
• Fixed README usage example, which skipped downloading of dataset data. Btw,
  see above for another way! (#124)
• Fixed typo in the API reference, which included the SupremeCourt dataset twice
  and omitted the RedditComments dataset. (#129)
• Fixed typo in RedditComments.download() that prevented it from downloading
  any data. (#143)

Contributors:

Many thanks to @asifm, @harryhoch, and @mdlynch37 for submitting PRs!