+0.5.3 - ?/7/2008 - bugfix release
+ * many fixes concerning the CProp hiearchy
+ * coercion database simplified
+ * coercion hiding now works properly for coercions to funclass
+ * triangular pullback works better with coercions to the function space
+ * notation for lists fixed to add a break point after the separator
+ * notation for the existential is now user definable
+ * \infrule layout added, allows to display readable fractions
+ * better window for terms grammar and TeX/Unicode
+