Removing unused local vars in Queue tests

JSON: encode BigDecimal NaN/Infinity as null.

delete_all raise an error if a limit is provided - fixes #4979

Don't type cast values that don't respond to to_i to 1

This reverts commit c3954bae.

Add documention for utc_offset method

JSON: Encode infinite or NaN floats as `null` to generate valid JSON.

notify_observers should be public

Allow extra arguments for Observers

1. ActiveRecord::Base is not ActiveRecord::Relation
2. The order of records from an SQL query is uncertain without an ORDER clause
3. Run your own tests when submitting a pull request

Handle distance_of_time_in_words boundary conditions. Fixes #3560.

Add ActiveRecord::Base#ids - Close #5812

Custom directories for rake notes