v1.1.4-alpha6 2011-12-02:
  - new filter for OpenXML files (Microsoft Office 2007+ documents)
  - added xfweb, a HTTP proxy integrating the ExeFilter engine

v1.1.4-alpha5 2011-08-25:
  - new filter for XML files
  - new functions to scan or clean a string, with content-type support
  - initial support for multithreading