+0.5.1 - -/5/2008 - minor bug fix release
+ * a wrong context was used to refine fixpoints arguments
+ when trying to optimize out the letin (grep for `AvoidLetIn):
+ (let rec f x = Fix... in f t ---> Fix... t)
+
0.5.0 - 9/5/2008 - bugfix release
* first release not considered experimental