[cpeterso]

edutechnion's link says 1108 open PRs and 999 closed.

Interesting that 2100 of the PRs are "Upgrade Apache Commons Collections to v3.2.2" and just 7 were "Upgrade Apache Commons Collections to v4.1".

[therealdrag0]

Probably v3.2.2 was lower hanging fruit for most projects. Instead of having to make code changes.