v1.0.3 Release - Change to handling of click events

Previous release had an issue where clicking through to an input or a button (for example the close button on jQuery.ui dialog boxes)  was not being recognised as a click.  Incorporated another fix from the v0.2.3 branch so the code now treats anything as a click if (a) they leave theri finger on the control for less than 500ms, or (b) they do not move their finger more than 10 pixels