1.3.0

• WARNING: Overwrite arrays found in previously loaded settings file (#137 thanks to @Fryguy and @dtaniwaki) - this is a change breaking previous behaviour. If you want to keep Config to work as before, which is merging arrays found in following loaded settings file, please add config.overwrite_arrays = false to your Config initializer
• Changed default ENV variables loading settings to downcase variable names and parse values
• Added parsing ENV variables values to Float type
• Change method definition order in Rails integration module to prevent undefined method preload error (based on @YaroSpace suggestion in #111)