Ionization

This is an urgent patch-release fixing a panic happened on primary CN during decrypted transaction verification. This version is compatible with v0.3.1 and does not require DB resync or configuration update on upgrade.

Behaviour changes:

• NeoXAMEV fork is enabled at height 2088000 of Testnet (#437)

Bugs fixed:

• decrypted transaction can't be verified at primary node due to panic (#439)