* Known bugs fixed
  * added execute method to FiskXMLRequest for easier request handling
(no more need to parse raw XML returned
  from server and better error handling). execute method is similar to
send method but it parses reply and
  returns reply as str or False if error occurs. There is also new
get_last_error method for accessing
  possible errors.
  * USAGE section in README now have examples using execute method
instead send method. Send method still works
  as it is used internally
  * little better handling of connection errors of FiskSOAPClient