upstream's code doesn't allow any way to match a version that `semver`
can't parse, not even with `*`:
```
> semver.satisfies('1-2-3','*');
false
> semver.satisfies('1.3','*');
false
> semver.satisfies('1.2.3','*');
true
```
while I was there, I added support for regexp in both name and
version, and added unit tests
