v4.1.1

Bug Fixes

• fixed bug where I used a synchronous method instead of its asynchronous variant (UpsertQuery.execute instead of UpsertQuery.aexecute in pangres.aupsert). This has no repercussions for the end user

Documentation

• fix illogic code in example for pangres.aupsert (using engine instead of connection in contexts) and commit which I had forgotten!
• added changelog

Testing

• overhaul of the tests. asynchronous and synchronous tests have been separated
• module test_upsert_end_to_end has been renamed to test_core