Return list of strings that are made by splitting coma-separated option value. Method returns
		empty list if option value is empty string

		:param section: option section name
		:param option: option name
		:return: list of strings

def split_option(self, section, option):
		""" Return list of strings that are made by splitting coma-separated option value. Method returns
		empty list if option value is empty string

		:param section: option section name
		:param option: option name
		:return: list of strings
		"""
		value = self[section][option].strip()
		if value == "":
			return []
		return [x.strip() for x in (value.split(","))]