Ocean Beach theme is missing a dependency

Ocean Beach theme uses compass-vertical-rhythm:

typography.js/packages/typography-theme-ocean-beach/src/index.js

import verticalRhythm from "compass-vertical-rhythm"

But it's not in the dependencies:

typography.js/packages/typography-theme-ocean-beach/package.json

Lines 6 to 9 in 33d86df

    
           "dependencies": { 
        
             "gray-percentage": "^2.0.0", 
        
             "typography-breakpoint-constants": "^0.16.19" 
        
           },

This causes gatsby develop to fail for me (I'm using Yarn v2):

A package is trying to access another package without the second one being listed as a dependency of the first one

Required package: compass-vertical-rhythm (via "compass-vertical-rhythm")
Required by: typography-theme-ocean-beach@npm:0.16.19 (via /path/to/.yarn/cache/typography-theme-ocean-beach-npm-0.16.19-d60d922395-2.zip/node_modules/typography-theme-ocean-beach/dist/index.js)

	"dependencies": {
	"gray-percentage": "^2.0.0",
	"typography-breakpoint-constants": "^0.16.19"
	},