Provides basic automatic locking support for Plone. Locks are stealable by default, meaning that a user with edit privileges will be able to steal another user's lock, but will be warned that someone else may be editing the same object. Used by Plone, Archetypes and plone.app.iterate

• 3.x -> Plone 6.0+ only
• 2.3.x -> used in Plone 5+ (not compatible with earlier Plone versions)
• 2.0.x -> used by Plone 4.x (but may also be compatible with earlier versions).
• Versions 1.x are used by Plone 3.