Updated project version info
Merge branch 'stable' of github.com:acado/acado
Added files for a CN2 solver with factorization routine.

(Copied files from the CN2 implementation).
Added the CN2_FACTORIZATION solver to the user interface
Working on the exported OCP solvers:

- moved xBoundIdx array from the main class to derived, because this
  is something condensing specific;
- cleaned a few minor thins and renamed some variables.
Fixed a minor bug when exporting argument lists.
Working on CN2_FACTORIZATION solver
Cleaning the condensing based solvers, making code a bit more readable
Working on CN2_FACTORIZATION solver