Rails Settings Versions Save

• Fixes migration generator for Rails 7.1 (#114, thanks to @nicbet)

• Support for lamdba on default value (#105)
• Fix setting object method regex (#107)
• Fix mutable default settings bug (#109)
• Add support for Rails 7 and 7.1 (#113)
• Requires Rails 6.1 or later
• Requires Ruby 3.0 or later
• Migrate CI to GitHub Actions

• Add option :persistent to allow multiple has_settings e.g. in Concerns (#99, thanks to @nicolaiespresso)
• Add support for Rails 6
• Test against Ruby 2.6
• Drop support for Ruby 2.3 or less (EOL)
• Drop support for Rails 4.1 or less

Test against latest Rubies and Rails

• Fix Rails 3 compatibility (#73, thanks to @justinmiller61)
• Allow SettingObject to try getters (#74, thanks to @marcferna)
• Improved support for Rails 5 by using versioned migrations

Compatibility with Rails 5.0

• Compatibility with Rails 4.2
• Compatibility with gem "protected_attributes"
• Removed ActiveRecord patch to optimize saving of serialized attributes (it's too dangerous and not needed with Rails 4.2 anymore)
• Specs convert to RSpec 3

• Allow saving blank settings (#51, thanks to @Kriechi)
• Fixed migration generator to make a .rb file
• Removed need for a :require option in Gemfile (#52, thanks to @Kriechi)
• Tested against Rails 4.1
• Readme improved (thanks to @Kriechi)

• Fix bug in to_settings_hash. Issue #47 (thanks to @hankwallace)

• Added RailsSettings::Base#to_settings_hash (thanks to @mguymon)