Added .gitignore.
First commit of cal.py.
Added a test and more code.
Added test testMatchYearAsWildCard which failed.
Test testMatchYearAsWildCard passes EVEN with a different year.
Added test testMatchesYearAndMonthAsWildCards.
Fixed some typos.
Test testMatchYearAndMonthAsWildCards passes EVEN with a different month.
Added test testMatchesWeekday.
Test testMatchWeekday pass EVEN with a different weekday.
Fixed some typos.
Fixed all EVEN problem.