Note this release has API changes, make sure to update your code when upgrading

New

• Added Request and Response classes
• Added Response methods text(), json() and blob()
• Added credentials option for CORS requests
• Added progress option to handle progress events of uploads

Changed

• Renamed option data to body
• Renamed option beforeSend to before
• Renamed method Request.cancel() to Request.abort()
• Changed property Response.headers to object
• Changed arguments for Http.get(url, [data], [options]) to Http.get(url, [options])
• Interceptors use Request.respondWith() method to return a Response

Removed

• No chain break in Promise (#248)
• Callbacks success, error and always
• Removed property Response.request
• Removed option xhr use progress or credentials options instead
• Removed option upload use progress or credentials options instead