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This page details the changes in each maintenance release, many of which will link to our Public Issue Tracker, which you may also use to find more details or see about upcoming changes.
IssueVersionTitle
PG-1513
5.2.3
FIX: Database script can fail during upgrade to 5.2.x [PostgreSQL only]
PG-1507
5.2.3
FIX: NuGet connector filters incorrectly allow too many packages regardless of wildcards
PG-1506
5.2.3
FIX: PyPI packages with multiple values for requires_dist property are inaccessible via connectors