Auto merge of #4317 - iKevinY:options-unit-struct, r=matklad
authorbors <bors@rust-lang.org>
Sat, 22 Jul 2017 20:53:06 +0000 (20:53 +0000)
committerbors <bors@rust-lang.org>
Sat, 22 Jul 2017 20:53:06 +0000 (20:53 +0000)
commit88aa6423a164774d09abc78a24e74e8e665f651b
treea8c6b08810d73ddac983086c36df42adf28bf93e
parent47783c151dcfcd3b835cd2012bfc2810c0f8d017
parentaa4f86fcd41abb0bab28b451f72723e95b82d015
Auto merge of #4317 - iKevinY:options-unit-struct, r=matklad

Convert Options struct into unit struct

Unit struct support was added in Docopt 0.8.1 via docopt/docopt.rs#217. Fixes #4174.