- An error in the program's help text is fixed.
- The minimum required CMake version to build the program is raised to CMake 3.8.
- add option to use SHA-384 instead of SHA-256
- add option to hash with SHA-512 instead of SHA-256
- add option to hash with SHA-224 instead of SHA-256
- add option to hash with SHA-1 instead of SHA-256
- initial version