• Multi-contract build system:
  • build system refactor;
  • multicontract.toml config system with labels,
  • eliminated monomorphization issue that was bloating some contracts;
  • build post-processing: wasm2wat, imports via wasm-objdump.
• Support for the new async call system (promises):
  • new APIs;
  • a new flavor of callbacks (#[promises-callback]);
  • callback optimizations.
• elrond-codec refactor: removed TopEncodeNoErr, NestedEncodeNoErr and TypeInfo
• System SC proxy: added support for controlChanges endpoint and transfer create role (from community).
• Module updates:
  • MergedTokenInstances module;
  • Governance module improvements;
  • set_if_empty for FungibleTokenMapper and NonFungibleTokenMapper.
• IntoMultiValue trait.
• Storage mapper improvements:
  • Storage mappers can read from another contract.
  • BiDiMapper improvements;
  • Fixed missing substitution rules for FungibleTokenMapper, NonFungibleTokenMapper, UniqueIdMapper, BiDiMapper, WhitelistMapper, RandomnessSource;
  • Added take and replace methods for SingleValueMapper;
  • Implemented Extend trait for UnorderedSetMapper.