Release v3.2.0

Release notes v3.2.0 🎉

Added several new libs to work with Bitcoin:

• BlockHeader to parse and format Bitcoin block headers.
• TxMerkleProof to verify the inclusion of a Bitcoin transaction in a block.
• TxParser to parse and format Bitcoin transactions.
• EndianConverter to convert between little-endian and big-endian formats.

Removed rarely used, legacy libs and contracts:

• SetHelper.
• UniswapV2Oracle.
• UniswapV3Oracle.