Suppress subcommand output by default #26
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For large or busy repositories, stack-pr commands can generate hundreds of lines of output from Git subcommands being executed. Most of the time these don't matter; the user doesn't care about them. This PR suppresses them by default by redirecting stdout and stderr to `subprocess.DEVNULL`. If this output is desired in a specific case, the command-line flag `--verbose` (`-V`) can be used to avoid this redirection.
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For large or busy repositories, stack-pr commands can generate hundreds
of lines of output from Git subcommands being executed. Most of the time
these don't matter; the user doesn't care about them. This PR suppresses
them by default by redirecting stdout and stderr to
subprocess.DEVNULL. If this output is desired in a specific case, thecommand-line flag
--verbose(-V) can be used to avoid thisredirection.