The package was not a proper ECMA Script package and therefore can not 
be tree shaken properly and would unnecessarily increase the package 
size.

- Simplified the code logic. Verification is done once in the beginning 
and not on every element.
- Now uses semver to verify and compare version strings

TipTap for the newest beta features and jasmine because of some 
dependency error npm was showing.

Remove useless plugin and add rule overrides for e2e test dir.

This is ised to flatten objects for the proerties panel.

- Check if button element is available in the toolbox
- Add the button to the canvas
- Change button label and check reflection on the canvas