3.1.0

• Added Pocket service. (richard67)
• Improved build process. (DanielRuf)
• Replaced third party Java backend in readme. (shred)
• Upgraded dependencies.
• Fixed creator being appended to title even though data-title has been set. (ksuess)
• Fixed canonical URL handling. (OliverFriedrich)
• Fixed typo in README. (richard67)

This release removes a service:

• Removed G+ service. (richard67)