v0.2.6

Updates and changes:

• update package for JupyterLab 3.5.1

What's Changed

• Bump @jupyterlab/coreutils from 5.4.2 to 5.4.3 by @dependabot in #49
• Bump underscore from 1.13.3 to 1.13.4 by @dependabot in #47

Full Changelog: v0.2.5...v0.2.6