waka/activerecord-mysql-unsigned — pull request #15 by winebarrel (2014-11-14 09:09:58+00:00)
Title: Call original type_to_sql when signed

When you call the type_to_sql of the superclass when signed, processing of bigint is not performed correctly.

```ruby
create_table("any_table") do |t|
t.integer("any_num", {:limit=>5})
# => CREATE TABLE `any_table` (... `any_num` int(5),
```