This releases has a few extra bugfixes
- disable spellcheck in html input
- add back in predefined currency notation
- fix/improve custom unit handling
- adjust : to only check the left hand side as it's always going to just be for output
- But bit concerned what if this would cause problem later on to functions with '{param: value}' inside it like format()
- html script only puts up alert if user did not calculation but only typed an expression without result
and other minor changes