v0.9.0

• Remove Promise polyfill (#195)
• Replace deprecated request library with node-fetch (#191)
• Increase test coverage of library to 100% (#190, #188, #187, #186, #185, #184, #183 #182, #181, #178, #177, #176, #175)
• Enable CI (#173, #190)
• Improve README (#164)
• Remove support for Safari 10.0