Fix docs.
Documentation.
Clarifying docs.
Remove whitespace. Improve docs.
Clarifying.
Fix link in changes.
Version bump to 5.2.0.
Fix link.
Add note about JSON.
Remove extra header.
Credit where credit is due.
Fix bad link.
Fix flaky test failing at the end of the month.
Test against multiple Pymongo versions.
Add config_uri options.
Fix errors for Python 2.1.x.
Update changelog.
Release 5.3.0.
Add auto_increment helper.
Improve documentation.