From 28a7007bd70fad71f21a00f8d7984ce3687f7dc9 Mon Sep 17 00:00:00 2001
From: Colin Summers <colinxs@cs.washington.edu>
Date: Wed, 8 Jan 2020 19:29:53 -0800
Subject: [PATCH] expand checkaxes/checksize, add tests, add
 Base.keys(s::MultiShape) (#15)