GRAMPC v2.2

Version 2.2 of GRAMPC is available and includes several major changes
- Switch from GNU Lesser General Public License (LGPL) to BSD-3-Clause License, see LICENSE.txt
- Support for fixed-size arrays instead of dynamic memory allocation, see Section 5.1.5 in documentation
- Added userparam as additional input to Simulink models
and some minor changes and bugfixes, see CHANGELOG.txt