2.1.18

• Blackhole now officially supports Pyston 2.2 and above.

2.1.17

• Release to update PyPI pages to remove references to Travis CI.

2.1.16

• Blackhole now officially supports Python 3.9.
• Blackhole no longer supports Python 3.6.

2.1.15

• Blackhole now officially supports Python 3.8 and PyPy3. There are issues
  using blackhole with uvloop on PyPy3 so that usecase is not supported.

2.1.13

• Blackhole now officially supports Python 3.7.

2.1.11

• Version bump release.

2.1.10

• This is a small release that brings improvements to the test system and has
  no changes that will impact users. It only has changes that affect Travis CI
  and updates for make targets and tox.

2.1.9

• Fixed/reintroduced support for uvloop
• Added support for setproctitle.

2.1.8

• Mostly a bugfix release.
• Added new command blackhole_config to display config options on command
  line.

2.1.7

• Introduced the ability to use uvloop in place of the default
  asyncio.event_loop.