v0.5.0

StarkNet

• Contract constructors
• Identify transactions by their hash (replacing transaction id)
• storage_ptr was merged into syscall_ptr (you should now use syscall_ptr to access storage)
• Separate signature information from the transaction calldata
• Change the way contract addresses are computed
• Support arrays in return values of external functions
• Local testing infrastructure:
  • Support passing structs
  • Allow specifying caller address
  • Support L1<->L2 messages
  • Expose the transaction's required resources
• Technical modifications:
  • Data availability format includes constructor arguments
  • The format of the contract definition hash has changed
  • Add L1 events when L1<->L2 messages are consumed

Cairo

• Improve compilation time
• Add a syntax for short strings (strings that fits into a single felt)
• Remove the python literal syntax (%[ ... %]) to allow safer compilation