stank: -print0 (like find)

[mcandre]

Offer a -print0 option to emit results using a NULL 0x00 separator rather than a line terminator separator. This helps recursive commands like:

stank . | xargs shellcheck

to work more reliably for file paths with spaces.

The new command would look more like:

stank -print0 . | xargs -0 shellcheck

Regards #103