Upgraded rubocop-performance to 1.8.0

- Decided to disable `Performance/CollectionLiteralInLoop` because it wouldn't give a huge benefit and could potentially make code less legible.
- Decided to disable `Performance/Sum` for now because it is currently outputting an error message even if it's autofixed the issue.

CHANGELOG.md

@@ -11,6 +11,9 @@
   * [`Lint/DuplicateRequire`](https://github.com/rubocop-hq/rubocop/pull/8474)
   * [`Lint/TrailingCommaInAttributeDeclaration`](https://github.com/rubocop-hq/rubocop/pull/8549)
 * Update [`Style/Alias` to prefer `alias_method`](https://github.com/testdouble/standard/pull/196)
+* Update rubocop-performance from 1.7.1 to 1.8.0:
+  * Plan to enable [`Performance/Sum`](https://github.com/rubocop-hq/rubocop-performance/pull/137) in the future, but there is currently a bug in the implementation
+* Add `ruby-2.3.yml` to add support for 2.3.
 
 ## 0.5.2
 

Gemfile.lock

@@ -3,7 +3,7 @@ PATH
   specs:
     standard (0.5.2)
       rubocop (~> 0.90)
-      rubocop-performance (~> 1.7.1)
+      rubocop-performance (~> 1.8.0)
 
 GEM
   remote: https://rubygems.org/
@@ -35,8 +35,8 @@ GEM
       unicode-display_width (>= 1.4.0, < 2.0)
     rubocop-ast (0.3.0)
       parser (>= 2.7.1.4)
-    rubocop-performance (1.7.1)
-      rubocop (>= 0.82.0)
+    rubocop-performance (1.8.0)
+      rubocop (>= 0.87.0)
     ruby-progressbar (1.10.1)
     simplecov (0.19.0)
       docile (~> 1.1)

config/base.yml

@@ -599,6 +599,9 @@ Performance/BindCall:
 Performance/Caller:
   Enabled: true
 
+Performance/CollectionLiteralInLoop:
+  Enabled: false
+
 Performance/CompareWithBlock:
   Enabled: true
 
@@ -673,6 +676,9 @@ Performance/StartWith:
 Performance/StringReplacement:
   Enabled: true
 
+Performance/Sum:
+  Enabled: false
+
 Performance/UnfreezeString:
   Enabled: true
 

config/ruby-2.2.yml

@@ -1,7 +1,4 @@
-inherit_from: ./base.yml
-
-AllCops:
-  TargetRubyVersion: 2.4 # The oldest supported
+inherit_from: ./ruby-2.3.yml
 
 Layout:
   HeredocIndentation:

config/ruby-2.3.yml

@@ -0,0 +1,8 @@
+inherit_from: ./base.yml
+
+AllCops:
+  TargetRubyVersion: 2.4 # The oldest supported
+
+Performance:
+  Sum:
+    Enabled: false

lib/standard/creates_config_store/assigns_rubocop_yaml.rb

@@ -16,6 +16,8 @@ def rubocop_yaml_path(desired_version)
         "ruby-1.9.yml"
       elsif desired_version < Gem::Version.new("2.3")
         "ruby-2.2.yml"
+      elsif desired_version < Gem::Version.new("2.4")
+        "ruby-2.3.yml"
       else
         "base.yml"
       end

standard.gemspec

@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "rubocop", "~> 0.90"
-  spec.add_dependency "rubocop-performance", "~> 1.7.1"
+  spec.add_dependency "rubocop-performance", "~> 1.8.0"
 
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "minitest", "~> 5.0"