Added --accessedAfter and --downloadedAfter switches - July 11 2022

1. Added --accessedAfter and --downloadedAfter switches. Fix to #8 . Thanks to @packpaul for PR.
2. Updated all dependencies. Fixes #6.

Fix for issue#1 adding an option to retain old artifacts - June 03, 2018

Merge pull request #2 from techpavan/issue#1-fix

Fix for issue #1. Non-latest versions can now be retained

First Version - Jan 21, 2018

release_v1_01212018

Bumping version.