new tooltip methods and clipboard support

added tooltip method SetOffsetX(offsetx)
added tooltip method SetOffsetY(offsety)
added basic clipboard support for the textinput object (0.9.0 only)
fixed text object width issues
fixed an error caused by pressing a function key while a textinput
object was focused
fixed the tooltip object not setting the state of its text object
cleaned up the tooltip object
modified textinput:RunKey to account for changes in the 0.9.0 api