v8.0.0-rc1

Added

• Bitwise operations for integers: band, bor, bxor, bnot, << and >>.
• Int.mulmod - combined builtin operation for multiplication and modulus.
• Crypto.poseidon - a ZK/SNARK-friendly hash function (over the BLS12-381 scalar field).
• Address.to_bytes - convert an address to its binary representation (for hashing, etc.).
• Raw data pointers added to AENS. In short we have introduced a new namespace
  AENSv2; they contain types similar to the old AENS; AENS.name and
  AENS.pointee, where the latter now has a constructor DataPt(bytes()). All
  AENS actions have been moved to AENSv2, and AENSv2.lookup and
  AENSv2.update consume and produce the new types. The old AENS namespace
  only contains the old datatypes, that can be used to interface existing
  contracts. Standard library AENSCompat is added to convert between old and
  new pointers.
• Introduce arbitrary sized binary arrays (type bytes()); adding Bytes.split_any,
  Bytes.to_fixed_size, Bytes.to_any_size, Bytes.size, String.to_bytes,
  and Int.to_bytes; and adjust Bytes.concat to allow both fixed and arbitrary
  sized byte arrays.
• Chain.network_id - a function to get hold of the Chain's network id.
• Allowing Bytes.to_any_size in calldata creation, to enable creation of arguments
  with arbitray size.

Changed

• Crypto.verify_sig is changed to have msg : bytes(). I.e. the
  signed data can be of any length (used to be limited to bytes(32)/hash).

Removed

• Bitwise.aes standard library is removed - the builtin operations are superior.

Full Changelog: v7.4.1...v8.0.0-rc1