Hack to load json gem first so we can overwrite its to_json.
Required Files
- json
- bigdecimal
- uri/generic
- pathname
- active_support/core_ext/big_decimal/conversions
- active_support/core_ext/hash/except
- active_support/core_ext/hash/slice
- active_support/core_ext/object/instance_variables
- time
- active_support/core_ext/time/conversions
- active_support/core_ext/date_time/conversions
- active_support/core_ext/date/conversions