Add option to disable host validation. (#79)

Fixes #78

Fix README formatting.

Change mDNS record to note TLS support. (#75)

Support new zeroconf version. (#73)

Fixes #72

Update CHANGELOG.

Update workflows.

Update version and changelog.

Update changelog.

Switch from netifaces to ifaddr. (#50)

ifaddr is pure Python, so it doesn't require a toolchain like
netifaces does.

Handle tornado 6.X versions. (#47)

Fixes #46