The 3.9.4 release fixes the following issues.
Credentials passing for HTTP BASIC or DIGEST authorization
is now supported.
URLResourceWithParams and RemoteXmlSimpleSearchEngineBase now accept
properties for basic http authorization to proceed. The properties can be
passed either dynamically (via controller attributes) or via system properties
http.auth.username and http.auth.username.
Truncate long documents in the webapp.
The webapp now has an option to truncate long document content
Updated foamtree visualization to version 3.2.3.
FoamTree visualization has been updated to the new shiny version.
Clustering by majority language.
New attributes are available in MultilingualClusteringDescriptor. It is now possible
to cluster using the language prevailing in the set of input documents. This is particularly useful
if language detection is a heuristic that makes occasional mistakes (then majority-voting will pick
the language for clustering).
For a complete list of improvements and bug fixes, see JIRA