New API options

1.3.0

• Add a configuration option to disallow a tooltip to close by normal mouse/keyboard events.

This should only be used if you're going to close a tooltip programmatically. There are two ways to set this option.

1. On the trigger element. Set the data-tooltip-autoclose attribute to false.
2. Programmatically. When calling isotip.open(), set autoClose to false in the options object.

Additionally,

• A class name can be added by passing className to open, or setting data-tooltip-classname
• Fixed a bug where clicking a child element in a tooltip would close the tooltip
• Fixed tests so they actually run properly