#13 Runtime Upgrade - New DEX aggregator pallet and other improvements

Summary

This is a runtime release for Acala and Karura that add a new DEX aggregator pallet, new transaction to allow people to transfer debit between different collaterals, and improvements on EVM+.

Release Note: Release Acala & Karura 2.6.4 · AcalaNetwork/Acala · GitHub

Referendum