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Papermerge 3.0.1 Release

I am happy to announce the release of version 3.0.1.

Among other things, this release fixes major issue related to DB connections. Let me provide short description of the problem. The access to specific REST API endpoints was leaving DB connection open. The problem is that open DB connection were accumulating up to the point (which depends on specific DB configuration) when DB was refusing to accept more DB connections, which resulted of course to the whole app going offline.

The root course of the problem is Django ORM and the way it handles DB connections. To mitigate the issue, we've decided start moving away from Django ORM to SQLAlchemy. Of course full transition to new ORM will span many releases, but the main point here is that for end users this transition is fully opaque.