Add support for currency and percentages

[ankane]

A few possible designs

{prefix: "$"}
{suffix: "%"}

[amingilani]

Also add support for commas in large numbers

[rept]

Indeed, other parameters should be decimal_symbol, thousand_separator. Is there currently any way of doing this (with Chartjs) or none at all?

[rept]

Another one could be decimal_places which would solve this one too: ankane/chartkick#301

[ankane]

This has landed on master for Chart.js, along with delimiter (thousands separator) and separator (decimal separator).

[rept]

@ankane that is some excellent news! Will test as soon as this is released. Thanks!

[ankane]

Just fyi, I changed the separator names to thousands and decimal to make it more clear and easier to spell.

[ankane]

Just released 2.3.0 🎉