• Return the right document for find_one_and_replace using ReturnDocument.AFTER and upsert
• Implement basic codec_options (#670)
• Add $trim and $dateFromSTring to the unimplemented operators
• Stop using obsolete methods in unit tests as much as possible
• Implement boolean operators (#663)
• Implement TTL Indexes (#660)
• Fix pylint after v2.6.0 release
• Introduce Docker to ease local development (#659)
• Implement the $regexMatch operator. (#658)
• Implement the $split operator (#661)
• Upgrade to MongoDB v4.4
• Create a framework to silence some NotImplementedError. (#656)
• Raise an error when trying to create the same index with different options
• Raise a TypeError when creating an index with a wrong param
• Fix $elemMatch querying on values directly
• Fix $pull update operation when using $in for a nested field
• Accept snapshot or other keyword arguments for find, although raise an OperationFailure if it's not falsy
• Mark the start_session method of MongoClient as not implemented
• Fix tz awareness for count_documents and $match in aggregate
• Fix a test that was assuming to be run on UTC clock. (#652)