jsPanel v4.5.0

• jsPanel now uses pointer events if supported
• bugfix - recoded the complete close() function to fix a long standing bug
• bugfix in jsPanel.position() concerning the use of the dock extension
• bugfix in minimize() concerning the use of an image as background
• bugfix in option dragit
• bugfix in tooltip extension
• jsPanel themes got numerous updates:
  • additional built-in themes
  • updated built-in theme colors
  • all built-in themes are are now "normal" color themes → less CSS
  • recoded bootstrap theme support → no more bootstrap adjustments in jspanel.css needed
  • option theme can now be used with an object as value → more theming options and better support of images (includes css gradients) as panel background
  • reworked built-in controls icons, updated CSS accordingly and changed hover effect of controls
• added option onparentresize to autoreposition childpanels on various resize actions of the parentpanel
• added parameter status to the callbacks onbeforemaximize, onmaximized etc.
• added parameter options 'hide' and 'show' to panel method setControlStatus() parameter action
• added optional callback function to panel method getChildpanels() and the method now returns a NodeList (instead of an array)
• added optional callback function to panel method isChildpanel()
• added support for setting option.position.of in a position shorthand string
• various minor fixes/improvements in js and css