Cargo updated to v0.27.

Closes #20

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
+### Changed
+- Cargo updated to v0.27.
 
 ## [0.4.0] - 2018-05-10
 ### Added
@@ -13,7 +15,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Changed
 - Remove std crates from the `std` group that was explicitly added as dependencies.
-- Cargo update to v0.26.
+- Cargo updated to v0.26.
 
 ### Fixed
 - The `--filter` flag behavior.

Cargo.toml

@@ -8,15 +8,13 @@ readme = "README.md"
 license = "MIT"
 
 [dependencies]
-cargo = "0.26.0"
-docopt = "0.8.1"
+cargo = "0.27"
 env_logger = "0.5.1"
 failure = "0.1.1"
-goblin = "0.0.13" # use this version because `object` uses it
+goblin = "0.0.15"
 memmap = "0.6"
-multimap = "0.4.0"
-object = "0.7"
+multimap = "0.4"
+object = "0.8"
 rustc-demangle = "0.1.6"
-serde = "1.0.11"
-serde_derive = "1.0.11"
+structopt = "0.2"
 term_size = "0.3.1"