v0.6.0

This is a bugfix release.

What's Changed

• Multiple --tag-filter-mask params by @ransford in #123
• Run py2 and py3 tests in separate workflows by @ukrutt in #140
• Add basic encode support for ReaderEventNotification by @fifieldt in #144
• custom configuration dictionary by @ransford in #147
• Bump tornado from 3.2.0 to 6.3.2 in /examples/tornado by @dependabot in #175
• Bump tornado from 6.3.2 to 6.3.3 in /examples/tornado by @dependabot in #176

Full Changelog: v0.5.1...v0.6.0