sha256, version 1.5

This version fixes an error in the program's help text.

sha256, version 1.4

This version adds support for SHA-384 hashes to the program.

sha256, version 1.4 (fixed)

Same code as version 1.4, but with fixed CMake files.

sha256, version 1.3

This version adds support for SHA-512 hashes to the program.