read_attribute_before_type_cast should accept symbol
Clean up unused method for `rake doc`.
Merge pull request #10568 from siong1987/minor-refactoring

Clean up unused method for `rake doc`.
Merge pull request #10572 from nertzy/dont-modify-options-hash-in-primary-key

Don't modify args in TableDefinition#primary_key
Merge pull request #10567 from neerajdotname/read_attribute_before_type_cast_should_accept_symbol

read_attribute_before_type_cast should accept symbol