v1.18.3

Changes

• generator_name is now optional. If not specified, no entity for the generator itself will be created.
• New field, exception_ignore_regexes allows you to not send notifications for exceptions that happen if the exception + stack trace matches any of the regexes specified. Intended to suppress notifications due to known faulty components. Only allowed for alert global_exception spec and any alert with name="unhandled_exception" (intended for use by people writing components and using alert2 create_task)
• Hysteresis state now preserved across HA restarts.
• Fix bug where a hysteresis alert could get stuck on if HA restarted between when the alert turned on and would turn off.