some minor instance calculation improvements
add method to get the day of week to CalendarMetrics
add a couple of tests
add another TODO to README.md
remove pointless method
Extracted testcase into CalendarMetricsTest class
Added parenthesis to ensure correct evaluation
Added test for getMonthOfYearDay
Improved test speed by removing unneccessary String construction
Removed string construction for speed
Added test class for Calendar
minor performance improvements in GregorianCalendarMetrics
use CalendarMetrics to speed up FreqIterator and ByWeekNo expansion
add tests for MINUTELY and SECONDLY rules
fix iteration bug in FreqIterator for MINUTELY and SECONDLY rules
add missing filter code for BYDAY rule
add setDayOfWeek method to Instance
add tests
fix recurrence tests
fix handling of monthly and weekly filtering
add some javadoc