Completed Implementation of Cat

[mmstick]

• Added exit_status to the Program structure to keep track of errors.
• Removed the vector for buffering the file and instead opted for printing to stdout directly.
• Implemented caret (^) and M- notation for showing non-printable characters.

[ticki]

It still fails.

[mmstick]

That's because it's not this code that is causing the error. Recent commits added to master are causing all builds to fail, namely that a MAN_PAGE constant was added to many commands but those commands aren't using the constant in the code.

[ticki]

Oh, right. The master is broken.

[ticki]