V1.6.0

Basically this new release 1.6.0 fixes problems with generic EClass (like Folder), and manage correctly imports in src-gen files (it is not necessary to reorganize imports like before).

Fix issue #32 : Use now Java 8
Fix issue #20 : The generics types are not managed
Fix issue #39 : display file list not sorted
Fix issue #42 : The menu for genModelAddon is now empty
Fix issue #41 : Generic classes are not well generated in factory
Fix issue #44 : Multiple generics are not well generated
Fix issue #34 : Type returned by composition with single cardinality
Fix issue #33 : Dev implementation failed when the EClass is declared as
Fix issue #28 : Paths in Ant files
Fix issue #43 : Remove trace during emf generation
Fix issue #19 : Should call organize import or generate the correct