* 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
0.5.2 - 2/7/2008 - better-usability-for-the-working-constructivist release
* refinement of match fixed to prevent useless unfolding,