1) New syntax: methods add, reload and remove can now process multiple

1) New syntax: methods add, reload and remove can now process multiple
   entries with just one method invocation. NO BACKWARD COMPATIBILITY RETAINED.
2) Serialization and deserialization: when serialization is enabled, every
   time a stylesheet is recompiled it is also serialized on disk. When
   booting, UWOBO automatically reloads every serialized stylesheet.
3) More verbosity: every method gives back to the user and writes in the log
   much more information than before.
4) Methods update and updateAll (whose semantic was unclear) definitely removed.