Age period filter

[jet-pentest]

Hi! The 'age' parameter allows get result with a fixed age of CVE, but period filter are not allowed yet. Like a "Give me all CVEs for 'node.js' in the last 500 days" for filter out potentially old invalid results.

[ehsandeep]

@jet-pentest cvemap -p jira -age '< 500' this works?