core (memory/sqlite): better stability: - timeout increased to 15 s - if a query fail, it's retried up to 5 times - foreign key PRAGMA is executed on every new connection object (should fix non working foreign keys) those are Q&D workarounds for issues with Sqlite, before switching to a higher level module to handle it correctly.

Use this module to temporary store files that need to be integrated to other
projects such as Wokkel.

For example, the changeset that introduced this folder adds RSM (XEP-0059)
support to Wokkel. The files in sat.tmp.wokkel are imported over the initial
wokkel files from sat.plugins.__init__.py