use cells 4.1.7

See trailblazer/cells#448

Author: george-carlin

Diff for: Gemfile

@@ -6,10 +6,7 @@ gem 'rails', '5.0.2'
 gem 'trailblazer', '~> 2.0.1'
 gem 'trailblazer-rails', '>= 1.0.0'
 
-# Using my own fork of cells which has a change to how Collection#join works.
-# My PR has been merged but not released, see https://github.com/trailblazer/cells/pull/448
-# Once it's released we can switch back to getting cells from Rubygems
-gem 'cells', github: 'georgemillo/cells', branch: 'collection-join'
+gem 'cells', '~> 4.1.7'
 gem 'cells-erb', '0.0.9'
 
 gem 'acts_as_tree', '~> 2.4.0'

Diff for: Gemfile.lock

@@ -1,14 +1,3 @@
-GIT
-  remote: git://github.com/georgemillo/cells.git
-  revision: e24cfc89a7f7260a7cb5a12ad2f9f5d95dbf2245
-  branch: collection-join
-  specs:
-    cells (4.1.6)
-      declarative-builder (< 0.2.0)
-      declarative-option (< 0.2.0)
-      tilt (>= 1.4, < 3)
-      uber (< 0.2.0)
-
 GIT
   remote: git://github.com/sinatra/sinatra.git
   revision: 27d36fdad2104780b609aec8ac55f5fb8fa4ed18
@@ -100,6 +89,11 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
+    cells (4.1.7)
+      declarative-builder (< 0.2.0)
+      declarative-option (< 0.2.0)
+      tilt (>= 1.4, < 3)
+      uber (< 0.2.0)
     cells-erb (0.0.9)
       cells (~> 4.0)
       erbse (>= 0.0.2, < 0.1.0)
@@ -484,7 +478,7 @@ DEPENDENCIES
   bullet (= 5.3.0)
   byebug
   capybara (= 2.7.1)
-  cells!
+  cells (~> 4.1.7)
   cells-erb (= 0.0.9)
   cells-rails
   database_cleaner