backend (memory), frontends: improved history filtering: a "filters" dictionnary is now use to filter, it can have, for now, filtering on: - "body": filter only on the body (equivalent to former "search" parameter, but not case sensitive) - "search": fitler on body + source resource - "types": allowed types - "not_types": forbidden types primitivus now do searching using "search", i.e. source resource is now taken into account (and search is now case insensitive)

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