v0.88.0

What's Changed

• docs(changelog): promote 0.88.0
• fix(hooks): no admission ticket for an event injected under the room lock (RMK-186)
• docs(examples): a slow content check off the room lock, failing closed (RMK-186)
• feat(hooks): BEFORE_BROADCAST checks can run off the room lock (RMK-186)
• feat(hooks): a hook can declare itself fail-closed (RMK-186)
• Begin 0.88.0.dev0 development

Full Changelog: v0.87.0...v0.88.0