Add test for interrupt

Version guard the blob handling to 7.71+

Version 1.6.1

Version bumps due to release

Merge branch 'lucajoos-master'

Make CI work with multiple Pg versions, really necessary to

test the various differences in backends for an extension like this.

Allow installation in alternate schema w/o search_path hacking. Closes …

…#122

remove dead link

Add test for timeouts

Make references to handle local