Fix up of https://wago.io/NyT8PY6fM including:
- Duration correction to accurately show expiration time.
- Improvement to looks.
- Fix to inaccurate debug text.
- Removal of redundant utility code that is available in default libs.
Hopefully very intuitive to use.
- The vertical bar in the middle is the zero line.
- Left of this ray will deal damage, right of it will heal.
This will only show your own ray of hope (i.e. if you're not a priest you will see nothing). No technical reason why this couldn't be done to show an ally or enemy ray of hope but not doing so for now.