StarkNet Node API v0.2.0 RC1

Release Candidate 1.

This is the first release candidate for v0.2.0 of the specification for Starknet full node API.

Changes

• Renaming account_address to sender_address in invoke transaction
• Remove contract address from deploy_txn
• Add broadcasted txn type
• Adding a distinct l1 handler transaction type
• Add continuation token for paging
• Add abi to class
• Add invoke tx v1
• Pack storage diff entries per contract address
• Removing protocol version method
• Add block id to get class and change invalid contract hash to contract not found
• Add block_id to starknet_getNonce