Log event store errors better
We should capture the following during event store
- Incoming event JSON
- Raise warning for validation errors (as they can indicate our serializer types are wrong)
- Maybe tag the project id, if known
This would help with issues such as #62 (closed)
This does have some potential PII concerns - we need GlitchTip to anonomize it's own error reporting. The data may be more nested than typical as GlitchTip will in effect be raising a new event with an event attached...