New library: argparse, for parsing CLI arguments

[Steven Schveighoffer]

On 10/19/21 6:54 AM, Andrey Zherikov wrote:
> On Monday, 18 October 2021 at 13:16:01 UTC, Steven Schveighoffer wrote:
>> Prepare for some PRs, I already see ways to make this better ;)
> 
> Don't you mind sharing your ideas?
> 

Just nitpicks. Like allowing `@NamedArgument` without parentheses. Or 
using `@NamedArgument("b", "banana", "ban")` instead of 
`@NamedArgument(["b", "banana", "ban"])`

All this is possible. It takes some effort on the library side, but 
makes things pleasant to use.

I'll know more when I start using it.

-Steve