Added a catch for event errors on the event queue
#27: Added a time property type
#27: Added TextEditStyle
#27: Fixed a bug in the time property type
Fixed a NPE in the animation manager
Fixed a rendering bug
#27: Added the ability to specify -1 for the cursor blink rate to make the cursor not appear at all.
#27: Added the text-edit-style mapping
#27: Added code to make a cursor appear and blink, but all it does is make the text at and after the cursor disappear.  So I have disabled the cursor in the default style sheet.