Commits on Mar 16, 2018

1. Fix a regression with parsing multivalue options …

   By default, clap interprets
   
   ```
   cargo run --bin foo bar baz
   ```
   
   as
   
   ```
   cargo run --bin foo --bin bar --bin baz
   ```
   
   This behavior is different from docopt and does not play nicely with
   positional arguments at all. Luckily, clap has a flag to get the
   behavior we want, it just not the default! It will become the default in
   the next version of clap, but, until that time, we should be careful
   when using the combination of `.long`, `.value_name` and
   `.multiple(true)`, and don't forget to specify `.number_of_values(1)` as
   well.

   

   matklad committed Mar 16, 2018
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