* Made it easier to test the frontend against an existing core instance.
* Ensured that script works regardless of current working dir
* Use consistent quote style
* Also allow using variables in hassUrl override
* Improved the default behavior of the script
* more consistent variable naming
* don't install a global dependency
* documented caching wierdness where if you switch core endpoints the old one remains in use
* Simplified some code
* improved documentation
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Co-authored-by: Petar Petrov <MindFreeze@users.noreply.github.com>