+0.5.5 - 17/11/2008 - bugfix release with students in mind
+ * by ... we proved fixed to use only the specified lemmas but
+ using full unification inside auto.
+ * new apply rule tactic, that exploits the goal type to
+ disambiguate the input term.
+ * new didactic/ library directory, with support for natural deduction
+ treese.
+
+0.5.4 - 19/10/2008 - bugfix release
+ * When a file is opened, the cursor is placed at the begin of the
+ buffer and not atthe end as before
+ * New macro eval