mod_traceback: Hook signal via event instead of directly
Safer this way, see Prosody trunk rev 69faf3552d52
---
labels:
- 'Stage-Obsolete'
summary: 'XEP-0313: Message Archive Management for MUC'
superseded_by: mod_muc_mam
...
Since Prosody 0.11, this module is [included in Prosody](https://prosody.im/doc/modules/mod_muc_mam), you will be redirected there shortly.