TODO

   1 * Complete color control
   2 * Rule verifier/syntax checker
   3   - probability factor
   4   - whitespaces
   5   - check for "]", "}" and ")"
   6   - unknown commands
   7 * Exeptions
   8 * Prevent CPU from eating up all its resources when generating
   9 * Better 3D control of model
  10 * A better name than "LSystem3D"...