soon:
 o add all help functionality into grascal
 o improve gradient support and include jacobian

later:
 o add module administration documentation
 o add GMP module(s!) and long number modules discussion
 o better error support
 o more (online) documentation
 o add help-syntax to modules.lyx
 o integration-modules
 o more polynomial features 
 o PDE modules
 o more programmer-friendly and safe matrix-class

even later:
 o add more windows to grascal for common tasks
 o user-friendly-ness ;)
 o output filters (mathml, html, latex)