add page on using Haskell expressions #164
Description
A beginners guide to customization with Haskell.
Explanations + demo code samples:
- show how to set and reference variables
- use of "do" and "let"
- writing and using custom functions
- how to reference Haskell data values - both fixed and constants
Nice to have: explanation of why adding this type of code is helpful - what does it open up musically