Merge pull request #1216 from kbknapp/v2.31.2

v2.31.2 (2018-03-19)

Bug Fixes

• Fish Completions: fixes a bug that only allowed a single completion in in Fish Shell (e8774a8, closes #1212)
• AllowExternalSubcommands: fixes a bug where external subcommands would be blocked by a similarly named subcomand (suggestions were getting in the way). (a410e85)

Documentation

• Fixes some typos in the README.md (c8e685d7)

v2.31.1 (2018-03-06)

Improvements

• AllowMissingPositional: improves the ability of AllowMissingPositional to allow 'skipping' to the last positional arg with '--' (df20e6e2)

v2.31.0 (2018-03-04)

Features

• Arg Indices: adds the ability to query argument value indices (f58d0576)
• Indices: implements an Indices<Item=&usize> iterator (1e67be44)
• Raw Args adds a convenience function to Arg that allows implying all of Arg::last Arg::allow_hyphen_values and Arg::multiple(true) (66a78f29)

Documentation

• Fix some typos and markdown issues. (935ba0dd)
• Arg Indices: adds the documentation for the arg index querying methods (50bc0047)
• CONTRIBUTING.md: fix url to clippy upstream repo to point to https://github.com/rust-lang-nursery/rust-clippy instead of https://github.com/Manishearth/rust-clippy (42407d7f)
• Values: improves the docs example of the Values iterator (74075d65)
• Updates readme to hint that the wrap_help feature is a thing (fc7ab227)

Improvements

• Cargo.toml: use codegen-units = 1 in release and bench profiles (19f425ea)
• Adds WASM support (clap now compiles on WASM!) (689949e5)
• Uses the short help tool-tip for PowerShell completion scripts (ecda22ce)