0.9.6.43:

0.9.6.43:
	Improve loop index variable detection:
        * Allow the initial value and the step to be of different types,
          as long as the initial value is more contagious (e.g (LOOP
          FOR I FROM 1.0 TO 5.0 ...))
        * Allow modification to the index variable with -, not just +
          (e.g (LOOP REPEAT 5 ...))