v3.44.0

Compat v3.44.0

Diff since v3.43.0

Closed issues:

• Compat for keepat! (#750)
• too many dependencies (#764)

Merged pull requests:

• Drop support for Julia prior to v1.6 (#767) (@martinholters)
• add keepat! (#770) (@bkamins)
• Clean up link list in README (#771) (@martinholters)
• Expand usage section in README to mention backports (#772) (@martinholters)
• Backport keepat! to 3.44.0 (#770) (#773) (@bkamins)