mini.go
func (config *Config) Float(key string, def float64) float64 {
	return getFloat(config.values, key, def)
}
func (config *Config) Float(key string, def float64) float64 {
	return getFloat(config.values, key, def)
}
/*
Float looks for the specified key and returns it as a float. If not found the default value def is returned.
*/