v0.3.0

What's Changed

• docs: codify PR-based release process by @gilad-rubin in #4
• docs: drop stale vscode-extension references and tidy markdown by @gilad-rubin in #5
• Make Hypernote JupyterLab-first by @gilad-rubin in #7
• chore: prepare v0.3.0 release by @gilad-rubin in #8
• fix: configure release tag identity by @gilad-rubin in #9

Full Changelog: v0.2.0...v0.3.0