rs_sha256 0.1.1

`rs_sha256` is a Rust implementation of the SHA-256 cryptographic hash algorithm, part of the larger `rs_ssl` project. This package provides SHA-256 hashing functionality in a standalone manner, ideal for when only SHA-256 is required. Alternatively, for those seeking a comprehensive set of cryptographic functions, this same algorithm is included within the broader `rs_ssl` library bundle. The focus of `rs_sha256` and the larger project is on performance, safety, and openness, with a commitment to ongoing maintenance and enhancement.