hmm... let's be honesty about the difficulty level of a JIT DSP graph builder :)

README.md

@@ -688,7 +688,7 @@ to the current "expr" library. Extending that process to the entire
 signal graph (or at least core classes within it) would benefit
 performance on a greater level.
 
-### Difficulty: Moderate to difficult
+### Difficulty: Difficult
 
 Since there is pre-existing
 work done with the jit "expr" library, a good start would be to help