[RFE] support for wildcard kind

[igor-raits]

rust utilizes wildcard in away:

* := >=0.0.0
1.* := >=1.0.0 <2.0.0
1.2.* := >=1.2.0 <1.3.0

it's definitely possible to workaround on my side, but would be very cool enhancement!

And thanks for making this library!

[igor-raits]

actually looks like it can parse *, but can't parse 1.2.*