Version 1.6.000.

Changes in version 1.6.000:
	- Added tabs to the UI so that multiple scripts can be open at the same
	  time.  Also, scripts can now be saved to and opened from files.
	- Added a toolbar at the top of the UI and removed all buttons in the
	  middle of the window.
	- Enhanced logic that saves scripts to accommodate very large scripts.
	- Minor improvements to execute and disect result messages.