Decimal stripped on floats without leading digit

[schelcj]

If a field is marked numeric or number and the value parsed begins with . instead of a leading 0 the period is stripped off. For instance, if you pass .1 instead of 0.1 the parsed value becomes 1. This is a problem. This is related to the regex used to parse numbers expecting a sign, then digits, then optionally a period and more digits. However, the optional bit is ignored, the digit is captured and the period is dropped. This could be fixed by adding . to the character class before the first digit but I'm not sure that is the correct thing to do in all cases. Here's a gist example.