v0.4.0
This version contains breaking API changes in low level event-based API:
- The EventReceiver gets ownership of events.
- Always use linked-hash-map for map, preserving order.
API enhancement:
- Add a cause() method to EmitError
- Allow access to the Marker from ScanError
Performance enhancement:
- #78 do not clone on peek(), ~20% performance gain.
And various fixes in emitter.