2013/01/04 Due RTC Library v1.8
added
	- Function rtc_clock.set_clock()
			function to set Time and Date from compliertime -/date in 1 line
			
fixed
	- Bug in rtc_clock.unixtime()
	- Bug in rtc_clock.summertime()

2013/04/03 Due RTC Library v1.7
added
	- Function rtc_clock.date_already_set()
			function to proof if date is already set
	- Sketch Due_RTC_Simple_test_of_date
			for rtc_clock.date_already_set()

2013/04/03 Due RTC Library v1.6
added
	- Function rtc_clock.timing()
			function to test if time and date set in summer or not musst be done in the inital
			part when the clock is setup works in connection with rtc_clock.summertime() so
			thats if the clock is setup in the range of summertime the function
			rtc_clock.summertime() makes the right correct between the time changes
			for Germany usefull
	- Sketch Due_RTC_Simple_german_timing_summertime_sample 
			for rtc_clock.timing() & rtc_clock.summertime()
			
2013/04/03 Due RTC Library v1.5
modify
	- Sketch Due_RTC_Simple_Germay_Summertime
			some changes in the Sketch for an better Output on the Serialmonitor

2013/04/03 Due RTC Library v1.4
added
	- Function rtc_clock.summertime()
			function to show if summertime or not returns 1 for summertime (for Germany only)
	- Sketch Due_RTC_Simple_Germay_Summertime
			for rtc_clock.summertime()
	- Function rtc_clock.switch_years()
			function returns 1 if year is an switch year

modify
	- Function rtc_clock.unixtime()
			add support for timezone Germay now summer- wintertime automatic supported

2013/02/03 Due RTC Library v1.3
modify
	- Function rtc_clock.unixtime()
			add support for timezones to change automatic the unixtime to the right value
	- Sketch Due_RTC_Simple_Unixtime_timezone
			for rtc_clock.unixtime()

2013/01/03 Due RTC Library v1.2
added
	- Function rtc_clock.get_time()
			to get Time in one operation
	- Function rtc_clock.get_date()
			to get Date in one operation
	- Sketch Due_RTC_Simple_Sample_oneline_time_and_date
			for rtc_clock.get_time() & rtc_clock.get_date()
	- Changelog and versioning
			to get some overview for me and users
			
modify
	- Function rtc_clock.unixtime()
			some changes in the codelines
	- Sketch Due_RTC_Simple_Unixtime_Compilertime
			some cosmetic changes in this Sketch
		
fixed
	- Bug in rtc_clock.set_alarmdate function
			wrong value name

2013/28/02 Due RTC Library v1.1
added
	- Function rtc_clock.unixtime()
			for unixtime support
	- Sample Due_RTC_Simple_Unixtime_Compilertime
			for unixtime and compilertime

modify
	- Function rtc_clock.set_time()
			to support compilertime with the value __TIME__
	- Function rtc_clock.set_date()
			to support compilertime with the value __DATE__
	- Syntax Coloring
			set rtc_clock to KEYWORD3 now rtc_clock printed bold

2012/07/12 Due RTC Library v1.0
Initial Release