Name/Version, Author and Describe in Help

[pepa65]

Revolutionary tool! Hope this gets included in many distros, because distributing the pure-bash version made with --argc-build would be less satisfying.

Right now, tstargc -h is displaying:

tstargc 0.1.0
pepa65
Test app for Rust argc

USAGE: tstargc

It would be much nicer (in my opinion) to have:

tstargc 0.1.0 (pepa65) - Test app for Rust argc

USAGE: tstargc

Or when not using the @meta author tag, just tstargc 0.1.0 - Test app for Rust argc. Perhaps a format string would accommodate various tastes, like:
@meta helpheader @name @version (by @author)\nDescription: @describe producing:

tstargc 0.1.0 (by pepa65)
Description: Test app for Rust argc

[sigoden]

Now that you mention it, I also think the current help text is somewhat inappropriate.

So I commited #379 and #380. Now the head of the help text will only contain the description and usage.

Test app for Rust argc

USAGE: tstargc

This is consistent with clap in the Rust ecosystem.

[pepa65]

Now you're making your tool less capable. I could already get that by not setting version and author. In Clap I can get the name + version to display, I don't agree with the Clap default way of doing this.