Don't override belongs_to_required_by_default

[masaru-tech]

Don't override belongs_to_required_by_default when use activerecord-session_store.

use activerecord-session_store revision: b5e7da2

[config/application.rb]
module AppName
  class Application < Rails::Application
    # Initialize configuration defaults for originally generated Rails version.
    config.load_defaults 5.1

[config/initializers/new_framework_defaults.rb]
# Require `belongs_to` associations by default. Previous versions had false.
Rails.application.config.active_record.belongs_to_required_by_default = false

In rails console:

> ActiveRecord::Base.belongs_to_required_by_default
=> true
> Rails.application.config.active_record.belongs_to_required_by_default
=> false

When activerecord-session_store no use

In rails console:

> ActiveRecord::Base.belongs_to_required_by_default
=> false
> Rails.application.config.active_record.belongs_to_required_by_default
=> false

[minimum2scp]

I also encountered same problem.
And it seems to be resolved by #126, but new version is not released yet.

@sikachu or @kaspth or someone else,
could you release new version?

[h0jeZvgoxFepBQ2C]

I guess a new version has been released since then, so this issue can be closed? @sikachu @rafaelfranca