Evaluate whether Click satisfies our requirements better than argparse

[jweyrich]

We currently have a limitation related to argparser's subparsers, which I'm still not sure how to properly fix.
If you specify a config file in the command, then the command argument MUST come after the config file argument. Example:

static-deployer -c config.toml deploy --version VERSION

We currently can't use the -c <file> argument after the command (subparser), example:

static-deployer deploy -c config.toml --version VERSION

With that in mind, Click looks like a powerful and elegant alternative to argparse.