No more BufferedLogger so it can be LoggerTest

warning removed: (...) interpreted as grouped expression

use `symbolize_keys` instead of `dup.symbolize_keys!`

Remove obsolete reader from AC::MethodNotAllowed exception class

Reduce FILENAME_MAX_SIZE in ActiveSupport::Cache::FileStore

Remove AC::RenderError class second declaration

Fix deleting from a HABTM join table upon destroying an object of a model with optimistic locking enabled.

Merge pull request #5668 from plashchynski/validate_attribute_name_in_class_and_module_attribute_accessors

validate attribute names in class and module attribute accessors

Nested attribute setters can be overridden.

Typecast 'id' attribute in read_attribute when using custom pks

post.slice(:title, :content) # => { title: "Hello", content: "World" }

Spring cleaning in Rails::Paths