feat: Step in text fields

[paullryan]

Step is an important feature of number type textfields that allows the field to validate against decimals without it you can't use type number to check something like 32.33.

[mseemann]

there is an html 5 attribute step for input type number fields (https://developer.mozilla.org/de/docs/Web/HTML/Element/Input). did you mean this attribute? If not is there an standard that covers this problem?

[paullryan]

Yes I mean that, and all I mean is adding support for it is see PR #203.

[paullryan]

Oh and you're too quick to respond sometimes :), I was trying to get the PR in before you had a chance ;-)

[mseemann]

thx for the pr! going to merge this into master. will be in the release on Friday.

quick? no ;-)