Update structopt requirement from 0.2.1 to 0.3.6

[dependabot-preview[bot]]

Updates the requirements on structopt to permit the latest version.

Changelog

Sourced from structopt's changelog.

v0.3.6 (2019-12-22)

This is unusually big patch release. It contains a number of bugfixes and new features, some of them may theoretically be considered breaking. We did our best to avoid any problems on user's side but, if it wasn't good enough, please file an issue ASAP.

Bugfixes

• structopt used to treat ::path::to::type::Vec<T> as Vec<T> special type. This was considered erroneous. (same for Option<T> and bool). Now only exact Vec<T> match is a special type.

• #[structopt(version = expr)] where expr is not a string literal used to get overridden by auto generated .version() call, incorrectly. Now it doesn't.

• Fixed bug with top-level App::* calls on multiple structs, see #289.

• Positional bool args with no explicit #[structopt(parse(...))] annotation are now prohibited. This couldn't work well anyway, see this example for details.

• Now we've instituted strict priority between doc comments, about, help, and the like. See the documentation.

  HUGE THANKS to @ssokolow for tidying up our documentation, teaching me English and explaining why our doc used to suck. I promise I'll make the rest of the doc up to your standards... sometime later!

New features

• Implement StructOpt for Box<impl StructOpt> so from now on you can use Box<T> with flatten and subcommand (#304).

  enum Command {
      #[structopt(name = "version")]
      PrintVersion,
  #[structopt(name = "second")]
  DoSomething {
      #[structopt(flatten)]
      config: Box<DoSomethingConfig>,
  },
  
  #[structopt(name = "first")]
  DoSomethingElse {
  
  

... (truncated)

Commits

• bf008bb v0.3.6
• 920e84f Pre release tweaks and changelog
• 3534cb3 impl StructOpt for Box<impl StructOpt>
• e2270de Consistent doc comments (#296)
• 61065d0 Update src/lib.rs
• 78c0d0a Introduce #[structopt(rename_all_env)]
• 62f59d3 fixed typo, removed misleading doc
• 405f51c Add tests/utils.rs
• 8869d2f Prohibit positional bool args
• 1562e31 Send headers to all web sites
• Additional commits viewable in compare view

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[dependabot-preview[bot]]

Superseded by #79.