SPRINT #2:

  DATE:
   13:30
   27.09.14

  BACKLOG:
  Vector - add set method.
   Fix set rows varargs bug.
   Vector - add functions for expanding vectors.

 DATE COMPLETED:
  01:46
  28.09.14

 TASKS CLEARED:
  Vector - add set method.
   Fix set rows varargs bug.
   Vector - add functions for expanding vectors.
   Vector - add factory methods.
   Vector - add static const vectors (up, down, zero).
   Matrix - added sets and constructors with arrays of floats and __m128s.