4.0.0 (2021-02-15)

Features

• provider: remove state property (111e7aa)
• encourage returning strings instead of throwing (a113ef6)

BREAKING CHANGES

• provider: adding state: true is already redundant
  as protection: "state" is the default value. state: false
  can be substituted with protection: "state"
• We have supported throwing strings
  for redirections, while we were showing a waring.
  From now on, it is not possible. The user MUST return a string,
  rather than throw it.