unformat() should use the default decimal separator

[fmntf]

I think it is generally better to default to the decimal separator provided in the settings object instead of '.' for the unformat function.

This saves from calling accounting.unformat(v, accounting.settings.currency.decimal) a lot.

[wjcrowcroft]

Hey, thanks for this, and I agree - the only issue being: why default to the currency decimal vs. the number decimal?

You assume they'd be the same, I imagine settings.number.decimal should be the accepted default

What do you think?

[fmntf]

Yes, it makes sense. I used currency because I'm using accounting.js just to format/unformat currencies. But I think number is more appropriate.

[wjcrowcroft]

Ok great, if you're able to change the file on your branch, I can
auto-merge it here!

[fmntf]

I think it is complete now

[wjcrowcroft]

Awesome! Thanks, merging now.