Hack to load JSON gem first so we can override its to_json.
Required Files
- json
- bigdecimal
- ipaddr
- 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