Revert "bump new rc for nested transaction fix"

This reverts commit 7a39a07c065d267226ea3d08da46e621bf25d41d.
Revert "clean up some debugging code"

This reverts commit 28640fd2073e29a0c06448d9d819381ae5edb468.
Revert "Fix nesting transactions in the 'open' state #48"

This reverts commit 983cb39facad7aa69cc7804234da070eb2098912.