Publish packages

[eessex]

Sets up auto and publishing to NPM - releases on master, canaries for all other branches.

📦 Published PR as canary version: 0.0.3-canary.9.142.0

✨ Test out this PR locally via:

npm install @artsy/cohesion@0.0.3-canary.9.142.0
# or 
yarn add @artsy/cohesion@0.0.3-canary.9.142.0

[damassi]

@eessex - can we add a root index file that exports these two folders?

Something like

export * from './Events'
export * from './Schema'

That way we can do

import { Events, Schema } from '@artsy/cohesion'

[eessex]

Added an index file and updated force/reaction PRs.

[artsyit]

🚀 PR was released in v0.0.3 🚀