Changelog:
- Major update on node engine and runtime (breaking changes).
- Add pallet migration.
- Add RPC API for DId.
- Several bug fixes and improvements.
- Adjust fraction unit & remove unused precompiled runtime.
- Update new prod genesis (0x53a4d6764111ef4818a4d5b344f5d3dced3f7d8a5b24439519054c5e2a36576e).