Bump versionist

Gemfile

@@ -204,7 +204,7 @@ gem "rubyzip", "1.2.1", require: "zip"
 # https://github.com/discourse/discourse/pull/238
 gem "minitest"
 
-gem "versionist", "1.5.0"
+gem "versionist", "1.6.0"
 
 # Prevent accidental upgrades of thor
 # TODO: remove this when either all gems depending on thor have fixed the warnings

Gemfile.lock

@@ -736,7 +736,7 @@ GEM
     validate_url (1.0.2)
       activemodel (>= 3.0.0)
       addressable
-    versionist (1.5.0)
+    versionist (1.6.0)
       activesupport (>= 3)
       railties (>= 3)
       yard (~> 0.7)
@@ -899,7 +899,7 @@ DEPENDENCIES
   unicorn (= 5.3.0)
   unicorn-worker-killer (= 0.4.4)
   uuid (= 2.3.8)
-  versionist (= 1.5.0)
+  versionist (= 1.6.0)
   webmock (= 3.0.1)
   will_paginate (= 3.1.6)