Add support for thousand separator

[Rian Ariona]

Current version not supported for thousand separator, only decimal separator present.

[Bradley Wang]

Thanks for the suggestion.

Version 0.2.1 added thousandSeparator property. E.g. thousandSeparator: ',' turns 1000 into 1,000.

For certain locale, we can customize the thousandSeparator and decimalSeparator so 1,000.48 becomes 1.000,48.

Please help test these features and let me know how it goes.

[Rian Ariona]

Thanks for the update, it's working 👍