FYI, progress on v2:
* 2.0.next in progress
* Fix #323 by supporting more than one SQL entity in `:on-conflict`.
* Fix #321 by adding `:checking` mode. Currently only detects potential problems with `IN` clauses.
What will determine whether I go to Beta 3 or RC 1 is whether the maintainer of Gungnir gets back to me "soon" and what we decide to do about that potential integration.:thumbsup: