OptDir-0.1.0: README.md

OptDir
======

[![build](https://github.com/msakai/haskell-optdir/actions/workflows/build.yaml/badge.svg)](https://github.com/msakai/haskell-optdir/actions/workflows/build.yaml)
[![Hackage](https://img.shields.io/hackage/v/OptDir.svg)](https://hackage.haskell.org/package/OptDir)
[![License](https://img.shields.io/badge/License-BSD%203--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)

The OptDir type for representing optimization directions.