Release v4.0.0

Features

• ability to remove sandbox from iframes (#86) (9357957)
• add ability to use list of WebElements (#58) (7e518f4)
• add axe-core v4 (#85) (52b4534)
• add a more complete API (#75) (2285cb9)

Breaking Changes

• Changed package group ID to "com.deque.html.axe-core"
• Renamed the Java package name to "com.deque.html.axecore.selenium"