diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index b070c34..60c5b51 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -142,18 +142,6 @@ Style/ParallelAssignment:
     - 'lib/chrono_model/adapter/ddl.rb'
     - 'lib/chrono_model/time_machine.rb'
 
-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: PreferredDelimiters.
-Style/PercentLiteralDelimiters:
-  Exclude:
-    - 'lib/chrono_model/adapter.rb'
-    - 'lib/chrono_model/adapter/ddl.rb'
-    - 'lib/chrono_model/adapter/indexes.rb'
-    - 'lib/chrono_model/time_machine.rb'
-    - 'lib/chrono_model/time_machine/history_model.rb'
-    - 'lib/chrono_model/time_machine/time_query.rb'
-    - 'lib/chrono_model/time_machine/timeline.rb'
-
 # This cop supports unsafe autocorrection (--autocorrect-all).
 # Configuration parameters: RequireEnglish, EnforcedStyle.
 # SupportedStyles: use_perl_names, use_english_names, use_builtin_english_names
@@ -178,10 +166,3 @@ Style/StringLiterals:
     - 'lib/chrono_model/adapter/upgrade.rb'
     - 'lib/chrono_model/time_machine/time_query.rb'
     - 'lib/chrono_model/version.rb'
-
-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: EnforcedStyle, MinSize.
-# SupportedStyles: percent, brackets
-Style/SymbolArray:
-  Exclude:
-    - 'lib/chrono_model/adapter.rb'
diff --git a/benchmarks/benchmark.rb b/benchmarks/benchmark.rb
index b9f3edf..2de4a0b 100755
--- a/benchmarks/benchmark.rb
+++ b/benchmarks/benchmark.rb
@@ -14,7 +14,8 @@
 
 ITERATIONS = 5_000
 
-Foo.create! name: 'Ciao'
+Foo.create! name: 'My Foo'
+Bar.create! name: 'My Bar'
 
 first_foo = Foo.first
 
@@ -58,4 +59,16 @@
   x.report('#as_of') do
     ITERATIONS.times { first_foo.as_of(Time.now) }
   end
+
+  x.report('TimeGate .merge') do
+    ITERATIONS.times { Bar.merge(Bar.all) }
+  end
+
+  x.report('TimeGate .first') do
+    ITERATIONS.times { Bar.first }
+  end
+
+  x.report('TimeGate .last') do
+    ITERATIONS.times { Bar.last }
+  end
 end
diff --git a/benchmarks/benchmark_sample.rb b/benchmarks/benchmark_sample.rb
index 30fa962..c90566f 100755
--- a/benchmarks/benchmark_sample.rb
+++ b/benchmarks/benchmark_sample.rb
@@ -17,12 +17,21 @@
     t.string :name
     t.timestamps
   end
+
+  create_table :bars, force: true do |t|
+    t.string :name
+    t.timestamps
+  end
 end
 
 class Foo < ActiveRecord::Base
   include ChronoModel::TimeMachine
 end
 
+class Bar < ActiveRecord::Base
+  include ChronoModel::TimeGate
+end
+
 def run_benchmark_sample(iterations: 100)
   # Create
   iterations.times { |i| Foo.create! name: "Foo #{i}" }
diff --git a/lib/chrono_model/adapter.rb b/lib/chrono_model/adapter.rb
index 499dd6d..7f2bf5c 100644
--- a/lib/chrono_model/adapter.rb
+++ b/lib/chrono_model/adapter.rb
@@ -63,7 +63,7 @@ def chrono_setup!
     #
     def primary_key(table_name); end
 
-    [:primary_key, :indexes, :default_sequence_name].each do |method|
+    %i[primary_key indexes default_sequence_name].each do |method|
       define_method(method) do |*args|
         table_name = args.first
         return super(*args) unless is_chrono?(table_name)
@@ -161,11 +161,11 @@ def chrono_metadata_for(view_name)
     def chrono_metadata_set(view_name, metadata)
       comment = MultiJson.dump(metadata)
 
-      execute %[ COMMENT ON VIEW #{view_name} IS #{quote(comment)} ]
+      execute %( COMMENT ON VIEW #{view_name} IS #{quote(comment)} )
     end
 
     def valid_table_definition_options
-      super + [:temporal, :journal, :no_journal, :full_journal]
+      super + %i[temporal journal no_journal full_journal]
     end
 
     private
diff --git a/lib/chrono_model/adapter/ddl.rb b/lib/chrono_model/adapter/ddl.rb
index 19661f0..1809b72 100644
--- a/lib/chrono_model/adapter/ddl.rb
+++ b/lib/chrono_model/adapter/ddl.rb
@@ -214,7 +214,7 @@ def chrono_create_DELETE_trigger(table, pk, current, history)
       end
 
       def chrono_drop_trigger_functions_for(table_name)
-        %w(insert update delete).each do |func|
+        %w[insert update delete].each do |func|
           execute "DROP FUNCTION IF EXISTS chronomodel_#{table_name}_#{func}()"
         end
       end
diff --git a/lib/chrono_model/adapter/indexes.rb b/lib/chrono_model/adapter/indexes.rb
index b031248..dd2ec65 100644
--- a/lib/chrono_model/adapter/indexes.rb
+++ b/lib/chrono_model/adapter/indexes.rb
@@ -90,10 +90,10 @@ def chrono_create_history_indexes_for(table, p_pkey)
       #
       def chrono_rename_history_indexes(name, new_name)
         on_history_schema do
-          standard_index_names = %w(
+          standard_index_names = %w[
             inherit_pkey instance_history pkey
             recorded_at timeline_consistency
-          )
+          ]
 
           old_names = temporal_index_names(name, :validity) +
                       standard_index_names.map { |i| "#{name}_#{i}" }
diff --git a/lib/chrono_model/time_machine.rb b/lib/chrono_model/time_machine.rb
index c2bc229..bb5aece 100644
--- a/lib/chrono_model/time_machine.rb
+++ b/lib/chrono_model/time_machine.rb
@@ -108,7 +108,7 @@ def as_of(time)
 
       def attribute_names_for_history_changes
         @attribute_names_for_history_changes ||= attribute_names -
-                                                 %w(id hid validity recorded_at)
+                                                 %w[id hid validity recorded_at]
       end
 
       def has_timeline(options)
diff --git a/lib/chrono_model/time_machine/history_model.rb b/lib/chrono_model/time_machine/history_model.rb
index 4d45479..433a7f1 100644
--- a/lib/chrono_model/time_machine/history_model.rb
+++ b/lib/chrono_model/time_machine/history_model.rb
@@ -90,7 +90,7 @@ def at(time)
         # Returns the history sorted by recorded_at
         #
         def sorted
-          all.order(Arel.sql(%[ #{quoted_table_name}."recorded_at" ASC, #{quoted_table_name}."hid" ASC ]))
+          all.order(Arel.sql(%( #{quoted_table_name}."recorded_at" ASC, #{quoted_table_name}."hid" ASC )))
         end
 
         # Fetches the given +object+ history, sorted by history record time
diff --git a/lib/chrono_model/time_machine/time_query.rb b/lib/chrono_model/time_machine/time_query.rb
index 002556f..d38d8c3 100644
--- a/lib/chrono_model/time_machine/time_query.rb
+++ b/lib/chrono_model/time_machine/time_query.rb
@@ -93,7 +93,7 @@ def build_time_query(time, range, op = '&&')
         if time.is_a?(Array)
           Arel.sql %[ #{range.type}(#{time.first}, #{time.last}) #{op} #{table_name}.#{range.name} ]
         else
-          Arel.sql %[ #{time} <@ #{table_name}.#{range.name} ]
+          Arel.sql %( #{time} <@ #{table_name}.#{range.name} )
         end
       end
     end
diff --git a/lib/chrono_model/time_machine/timeline.rb b/lib/chrono_model/time_machine/timeline.rb
index ccf4e83..baa65a9 100644
--- a/lib/chrono_model/time_machine/timeline.rb
+++ b/lib/chrono_model/time_machine/timeline.rb
@@ -56,7 +56,7 @@ def timeline(record = nil, options = {})
 
         relation = relation.order("ts #{relation_order}")
 
-        relation = relation.from(%["public".#{quoted_table_name}]) unless chrono?
+        relation = relation.from("public.#{quoted_table_name}") unless chrono?
         relation = relation.where(id: rid) if rid
 
         sql = "SELECT ts FROM ( #{relation.to_sql} ) AS foo WHERE ts IS NOT NULL".dup
@@ -110,7 +110,7 @@ def quoted_history_fields
         @quoted_history_fields ||= begin
           validity = "#{connection.quote_table_name(table_name)}.#{connection.quote_column_name('validity')}"
 
-          %w(lower upper).map! { |func| "#{func}(#{validity})" }
+          %w[lower upper].map! { |func| "#{func}(#{validity})" }
         end
       end
     end