-- 0.1.3

* corrected an error for Recnum#indexes 
* corrected Recnum#unshift (length)
* corrected Recnum#shift, Recnum#pop, Recnum#delete_at, #nitems
* Recnum#cmp accept now an array

-- 0.1.4

* corrected bug with gc (test_dump)
* protected against old class

