Upgrading version to 2.3.1-dev
Renamed the property ajaxCache to cache now which also affects content functions now.
Added a test to make sure that the html content remains untouched if there is no new content to display.

Fixes #35
Improved the way mouse positions are observed.

Fixes #39
Setting up the correct observers when deactivating.
The HTML elements are now only created when the tooltip is actually shown.

#41
Adapted the tests for the new HTMLElement creation handling. #41
Corrected the .remove() native adapter function.
Deleting elements on hide works now

Closes #41
Added download files.
Upgrading version to 2.4.0
Merge tag 'v2.4.0'

Added the removeElementsOnHide option and fixed a few bugs.