Added credit for the original pairwise implementation.

Author: 0xf0f

project/functionality/utility.py

@@ -6,6 +6,9 @@ def pairwise(iterable):
     Steps through an iterable while looking ahead
     one item every iteration.
 
+    Modified from the implementation here:
+    https://stackoverflow.com/a/5434936/10444096
+
     Example:
         for current, next in pairwise([1,2,3,4]):
             print(current, next)