4.0.0-pre.2

This release comes with various API fixes. For up to date changes, see CHANGELOG.

Changes in this release:

• Update panic and panic_utf8 syscall signatures to indicate they do not return. PR 489
• Deprecate env::panic in favor of env::panic_str. PR 492
  • This method now takes a &str as the bytes are enforced to be utf8 in the runtime.
  • Change is symmetric to env::log_str change in 4.0.0-pre.1
• Removes PublicKey generic on env promise batch calls. Functions now just take a reference to the PublicKey. PR 495
• fix: Public keys can no longer be borsh deserialized from invalid bytes. PR 502
  • Adds Hash derive to PublicKey
• Changes method name parameters from bytes (Vec<u8> and &[u8]) to string equivalents for batch function call promises PR 515
  • promise_batch_action_function_call, Promise::function_call, promise_batch_action_add_key_with_function_call, Promise::add_access_key, and Promise::add_access_key_with_nonce are afffected.
  • Updates promise_then, promise_create, and Receipt::FunctionCall's method name to string equivalents from bytes PR 521.
  • Instead of b"method_name" just use "method_name", the bytes are enforced to be utf8 in the runtime.
• Fixes #[ext_contract] codegen function signatures to take an AccountId instead of a generic ToString and converting unchecked to AccountId. PR 518
• Fixes NFT contract standard mint function to not be in the NonFungibleTokenCore trait. PR 525
  • If using the mint function from the code generated function on the contract, switch to call it on the NonFungibleToken field of the contract (self.mint(..) => self.token.mint(..))
• Fixes nft_is_approved method on contract standard to take &self instead of moving self.
• Fixes receiver_id in mock::Receipt to AccountId from string. This is a change to the type added in 4.0.0-pre.1. PR 529
• Moves runtime syscalls to near-sys crate and includes new functions available PR 507