Make touch drag horizontal instead of vertical for better mobile support

Currently, the mobile support of the calendar (controllable by the undocumented nor typed `touchDragEnabled`) is not so mobile friendly.
Example:
The main issue arises from the fact that the user is trying to scroll through the page, but he is stuck scrolling through the calendar months.

If the months could be scrolled horizontally (left to right) instead of vertically (top to bottom) that would allow the user to better navigate the site.

Let me know what you think.