foldl-1.2.3: Composable, streaming, and efficient left folds

# foldl-1.2.3: Composable, streaming, and efficient left folds

This library provides strict left folds that stream in constant memory, and you can combine folds using `Applicative` style to derive new folds. Derived folds still traverse the container just once and are often as efficient as hand-written folds.

Modules

- Control
  - Control.Foldl
    - Control.Foldl.ByteString
    - Control.Foldl.Text