v1.0.0-alpha.4

Release notes

Cairo Language

Added ability to test specific panic values in tests. For example:

#[test]
#[should_panic(expected = ('assert(false)'))]
fn test_assert_false() {
    assert(false, 'assert(false)');
}

• Syntax:
  No need for turbofish in types. For example, Array::<felt> is now Array<felt>.
  ref arguments no longer have to be the first arguments.

• Added Array::span to the corelib.

StarkNet contract features

All execution info getters was merged into one syscall. These syscalls were removed:

    get_block_number_syscall
    get_block_timestamp_syscall
    get_caller_address_syscall
    get_contract_address_syscall
    get_sequencer_address_syscall 

And replaced with:

	get_execution_info_syscall