cDates: Display month calendars denoting event dates

This class can be used to display month calendars denoting event dates.

It can render a given month calendar as an HTML table, optionally denoting holidays and days of user defined events.

The calendar table cells presentation is configurable with CSS styles.

The class may also perform several types of date manipulation operations such as checking whether a date is valid or is an holiday, compute the time between two dates, or retrieve the month, day or year of a given date.