Never strip the version "prefix"

[pombredanne]

See also:

• Do not strip VCS tags leading "V" and do not use a "version_prefix" PURL qualifier aboutcode-org/dejacode#153

[chinyeungli]

@pombredanne
I added the following as a test, and it passed (I've not actually committed the test code, I just tested it locally).

def test_version_prefix_never_strip() -> None:
    p = PackageURL.from_string(
        "pkg:maven/org.apache.commons/io@v1.3.4"
    )

    assert p.type == "maven"
    assert p.namespace == "org.apache.commons"
    assert p.name == "io"
    assert p.version == "v1.3.4"
    assert p.qualifiers == {}
    assert p.subpath is None

    assert PackageURL.from_string(p.to_string()).to_string() == p.to_string()

and also based on the https://github.com/package-url/packageurl-python/blob/main/tests/contrib/data/url2purl.json#L209

In another word, there is no version prefix stripping from purl and from url.
I assume this is fixed?