Upgrade dependencies

Author: epage

Cargo.toml

@@ -13,16 +13,16 @@ keywords = ["cli", "testing", "assert"]
 build = "build.rs"
 
 [dependencies]
-colored = "1.4"
+colored = "1.5"
 difference = "1.0"
-error-chain = "0.10.0"
+error-chain = "0.11"
 rustc-serialize = "0.3"
 
 [build-dependencies]
-skeptic = "0.5"
+skeptic = "0.13"
 
 [dev-dependencies]
-skeptic = "0.5"
+skeptic = "0.13"
 
 [badges]
 travis-ci = { repository = "killercup/assert_cli" }