v1.0.0

• Dropped support for Node 10.
• Fixed #45: Call onAuthError when a refresh fails.
• Replaced awesome-typescript-loader with ts-loader for Webpack builds.
  the former appears unmaintained.
• Switched from Travis CI to Github Actions.

v0.7.0

• Ensure that only 1 refresh operation will happen in parallel. If there are
  multiple things triggering the refresh, all will wait for the first one
  to finish.
• Automatically schedule a refresh operation 1 minute before the access token
  expires, if the expiry time is known.
• BC Break: If a token is known when setting up OAuth2, this now needs to be
  passed as the second argument. The old behavior still works but will emit
  a warning, and will be removed in a future release.
• 'OAuth2Token' type is now exported.

v0.6.1

• #34: Refresh operation failed for the authorization_code flow.

v0.6.0

• Added a onAuthError event, allowing users to intercept this event and
  re-authenticate.
• Simplify types a bit. More duplication in the library, but this should
  result in easier to read errors.
• Typescript 4
• Switch from tslint to eslint.
• Webpack 5

0.3.4

• This package now throws OAuth2Error classes for server-side errors.

0.3.3

• When refreshing a token, browsers don't allow re-use of the same Request
  object. Now we're cloning it before use.

0.3.2

• When refreshing a token, and there's no client_secret, the client_id
  must be sent in the body.

0.3.1

• Now correctly exporting all the right symbols.

0.3.0

• Library is refactored and now uses a class.
• Support for authorization_code grant type.
• Exposing some more information to uses.
• Add a new onTokenUpdate hook for custom storage.
• It's now possible to construct a client with an existing (old) Access and/or
  refresh token.