Get decimal, group and minus

[nicola-spb]

I use formatter for output to the form and I want to parse formatted value from form too.

I can`t get decimal, group and minus for creation float number. I wanna replace:
decimal -> "."
group -> "" (delete)
minus -> "-"
and after parse to number.

Could you add getter methods to generated files?

[nicola-spb]

created pull request: #16

[nicola-spb]

Thanks