added a modified version of Iterator.java for use with daikon and added results for the mutation test on this class

made some small fixes and changed vector_r3 to be actually equivalent to vector. Also added haskell code to generate a shell script to run daikon

checked wishnu's mutations and applies manual preprocessing/desugaring where needed. Also fixed a bug where introduced variables in the wlp would result in an error (introduced variables may be part of the wlp when the code contains non-void functions that don't terminate within the set limit of iterations)

WLP is now calculated for every method seperately, instead of just for the main method. The code for filling the type environment is now seperated from the rest of the program.

side effects of left hand side in assignment handled. Side effects like this occur when assigning to arrays

seperated side effects from expressions by introducing variables for guards and expressions with operators

Fixed a bug with the verification of conditional expressions. Fixed a bug with method calls on objects.

break and continu fixed and tested. Added a settings file with an optional invariant for testing loops. Fixed a bug with the call to the verifier when dealing with loops.