Fixed conversion process from t.integer to t.bigint in mysql

[pocari]

In the MySQL migration, "t.integer :column, limit: 8" was correctly converted to t.bigint, but the others were not supported, resulting in incorrect diffs.

I have converted limit:5, limit:6, and limit7 so that they are also converted to t.bigint.

% cat db/migrate/20210412031952_create_integer_test.rb
class CreateIntegerTest < ActiveRecord::Migration[6.1]
  def change
    create_table :integer_tests do |t|
      t.integer :integer4, limit: 4
      t.integer :integer5, limit: 5
      t.integer :integer6, limit: 6
      t.integer :integer7, limit: 7
      t.integer :integer8, limit: 8
    end
  end
end
% bin/rails db:migrate
== 20210412031952 CreateIntegerTest: migrating ================================
-- create_table(:integer_tests)
   -> 0.0402s
== 20210412031952 CreateIntegerTest: migrated (0.0403s) =======================

% git diff db/schema.rb
diff --git a/db/schema.rb b/db/schema.rb
index 81977b0..41eec75 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,15 @@
 #
 # It's strongly recommended that you check this file into your version control system.

-ActiveRecord::Schema.define(version: 2021_03_07_041141) do
+ActiveRecord::Schema.define(version: 2021_04_12_031952) do
+
+  create_table "integer_tests", charset: "utf8mb4", collation: "utf8mb4_bin", force: :cascade do |t|
+    t.integer "integer4"
+    t.bigint "integer5"
+    t.bigint "integer6"
+    t.bigint "integer7"
+    t.bigint "integer8"
+  end

[winebarrel]

Thank you!

[winebarrel]

v0.9.3 has been released.