aelf(ELF) v1.6.0 Upgrade

The upgrade is estimated to happen at block height around 175663892 on the MainChain and 165829118 on the SideChain, and it is expected to be completed before October 23.

The core objective behind the v1.6.0 upgrade is to elevate the user experience for virtual address owners, making it effortless for them to retrieve related records and simplifying the management of virtual addresses across different chains.

Below are the details of this upgrade:

1. Support virtual address transaction events
2. Enable deterministic addresses for contract deployment