suggestion(semver): Parse python versions

Python versions don't actually conform to semantic versioning and if you have a need to parse them then using this library can be difficult.

I wrote a little helper which could theoretically be integrated into this library if you wanted to be flexible with the parsing. I will put it here just in case.

```ts
function parse(versionString: string) {
// Python version documentation:
// https://peps.python.org/pep-0440/#public-version-identifiers
//
// supports converting _most_ python versions into common semver
// [N!]N(.N)*[{a|b|rc}N][.postN][.devN]
//
// | example | result |
// | ------------ | ------------- |
// | 0.13.1a0 | 0.13.1-a.0 |
// | 0.13.1b0 | 0.13.1-b.0 |
// | 0.13.1rc0 | 0.13.1-rc.0 |
// | 0.13.1.dev0 | 0.13.1-dev.0 |
// | 0.13.1.post0 | 0.13.1-post.0 |
//
const py = versionString.match(
/^(\d+)[.](\d+)[.](\d+)[.]?(a|b|rc|dev|post)(\d+)$/,
);
if (py) {
const [, major, minor, patch, pre, dev] = py;
versionString = `${major}.${minor}.${patch}-${pre}.${dev}`;
}

// supports converting partial versions such as 1, 1.0 into valid semantic versions.
if (versionString.match(/^\d+$/)) {
versionString = `${versionString}.0.0`;
} else if (versionString.match(/^\d+[.]\d+$/)) {
versionString = `${versionString}.0`;
}

return semver.parse(versionString);
}
```