A SHA-256 implementation in Uiua. (Optimized for array programming joy, not for speed.)

~ "git: github.com/lynn/shaua" ~ Sha₂₅₆ Sha′₂₅₆ Sha″₂₅₆

Sha₂₅₆ utf₈ "abc"
## "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"

• The Sha₂₅₆ function takes bytes and returns a length-32 hex string.
• The Sha′₂₅₆ function takes bytes and returns a length-256 bit array.
• The Sha″₂₅₆ function takes bits and returns a length-256 bit array.