0.2.0

Key changes in the release:

• finally dropped the problematic jQuery dependency
• Moved build infrastructure from now-derelict JSPM to mainstream Webpack5
• Refactored frontend codebase from Javascript to Typescript, use newer Browser APIs
• somewhat improved frontend code quality and security posture (up-to-date mainstream dependencies, snyk scan)
• Placed a drop-in ready JS version of the "EZJump" form into ezjump/ for those that don't want to use the menu