Chain of entries in transversal.
Bumped scala version to 2.10.4.
With all optimizations that make the code slower.
Homogenized fixing and fixing1.
Speed up to ArrayPerm subclasses by including the image method directly in the subclasses.
Removed image caching from TEntry.
Cleanup of subgroupSearchRec, using customized stable sort.
Added basePointGroups method.
Operation of BSGS.basePointGroups is more precise, so that it can be used by Group.fixing wihtout bugs.
Refactored fixing method.
Updated to Scala 2.11.1.