v0.20.0

What's Changed

• Main by @cqc-melf in #136
• update tket email by @cqc-melf in #137
• Add new issues to project, not Jira by @cqc-alec in #138
• Feature/mainonly by @cqc-alec in #139
• Bump actions/add-to-project from 1.0.1 to 1.0.2 by @dependabot in #140
• fix mypy by @cqc-melf in #141
• update back and pylint version by @cqc-melf in #142
• Release 0.20 by @cqc-melf in #143

Full Changelog: v0.19.0...v0.20.0