jQuery's elem.html('') is way slower than elem.empty(). As clearing
element contents happens quite often in certain scenarios, switching
to using .empty() provides a significant performance boost when using
Angular with jQuery.
Closes#4457
Existing documentation implies that an Event object should be available
as `$event` on swipe directives, which previously was only working for
`ng-click`.
Closes#4071Closes#4321
BREAKING CHANGE: browserTrigger now uses an eventData object instead of direct parameters for mouse events.
To migrate, place the `keys`,`x` and `y` parameters inside of an object and place that as the third parameter
for the browserTrigger function.
BREAKING CHANGE: since all the code in the ngMobile module is touch related,
we are renaming the module to ngTouch.
To migrate, please replace all references to "ngMobile" with "ngTouch" and
"angular-mobile.js" to "angular-touch.js".
Closes#3526
