v3.0.0

Breaking:

• Require Node.js 8 181a0d1

Breaking for TypeScript users:

• Only use a CommonJS export for the TypeScript definition
  You need to change import isPromise from 'p-is-promise'; to import isPromise = require('p-is-promise');

Enhancements:

• Support a function with .then() and .catch() methods 817df82

v2.1.0...v3.0.0