There are a number of features and bugfixes added in devel branch:
* pgapp
* array of records type support
* #error.codename (more readable errors)
* Redshift support (by allowing dynamic typecache update fail)
* Aggregate small binary packets to one in epgsql_sock (performance improvement)
* Handle situations, when server initiate connection close
* prepared_query APIs
And 2 pull-requests awaiting merging:
Maybe it's a good time to merge these 2 pull-requests, merge devel to master and tag new release?
P.S.: for some reason now epgsql.app.src has `{vsn, "3.3.0"}`.