Version 1.9.0 released

• added some CSS attributes for the main table, in order to override defaults set by some frameworks; thanks to Paul Morganthall for suggesting;
• added a new "default_position" property, useful for setting whether the date picker should, by default, appear above or below the element it is attached to;
• fixed an issue in latest versions of Firefox in which, even though the date picker is absolutely positioned, it takes up space in the layout; thanks to Joost for noticing;
• fixed a bug with paired date pickers where the second date picker's range was not depending on the first date picker's date unless a date in the first date picker was manually selected, and thus ignoring any default values; thanks to Pascal Lindelauf;
• fixed a bug with highlighting months where in "months" view, if current date was higher than the number of days in February, the month would not be highlighted; thanks to Mark Tuor;
• fixed a bug with where if a text box a date picker is attached to would be disabled at run-time, the date picker's calendar icon would remain "enabled" after calling the "update" method; thanks to Frans for reporting;
• datepicker visibility is now controlled from CSS;
• fixed an issue because of which the library was not compatible with jQuery 1.5.2+ (as stated) but required jQuery 1.7+ instead; thanks to MartinGaedeke for spotting it and to Prakhar Birla for the fix;