v3.1.0

Changed

• Cache the "no deprecation" and "no update" status, avoiding checking every time (#129)
• Cache the comparator compared upon, avoiding re-scanning the same dependency multiple times (#129)
• Invalidate the cache after a configurable amount of time (#129)
• Check the validity of a comparator before trying to scan for deprecations, as already done for updates (#130)
• Improve the accuracy of the comparator validity verifier (#130)

Thanks to @SCjona for their very helpful issues!