bump version number

[matt-phylum]

Overview

I noticed we had made changes but not made a release in a while.

Changelog:

• Plus signs are escaped to improve compatibility with PURL implementations that incorrectly decode plus signs as spaces. (as proposed in define handling of plus and space package-url/purl-spec#261) (Pluses and spaces #14)
• Percent signs are escaped if they are contained within any component of the PURL (eg name 100%23 becomes pkg:generic/100%2523 instead of pkg:generic/100%23 which would parse as name 100#) (encode percent signs #16)
• PURLs are parsed primarily from the right, better matching the behavior described in the PURL spec and fixing some edge cases (eg pkg:generic/name@a%23/b%3F/c%40 gets name name and version a#/b?/c@ instead of namespace name@a#/b? and name c@) (better align parsing with spec #17)

Checklist

• Does this PR have an associated issue?
• Have you ensured that you have met the expected acceptance criteria?
• Have you created sufficient tests?

Issue

What issue(s) does this PR close. Use the closes #<issueNum> here.

[Allan-Clements]