TODO

-----------------------------------------------------------------------------
Features still needed for 2.2
	- Print options
	- Hand tool scrolling

-----------------------------------------------------------------------------
Features still needed for 2.2 before final release:

	- implement the anti-glitch algorithm from 1.8.5
	- complete balloon help messages

-----------------------------------------------------------------------------
Features for 2.2:
	- Debug symbol editor.
	- PDF output of designs.
	- EPSF output of scope traces.
	- Positioning of sig_names on wires: fix the position of names
	- Verilog "primitive" modules
	- manual simulation stimuli should be automatically logged in
	   script format, "re-playable": one could start "by hand"
	   and edit the logfile to a simulation script out of it;
	- Rename udev/TIP to VPD and check coke machine example.

-----------------------------------------------------------------------------
Features not yet assigned to a release:
	- Other types of nets other than wire (e.g, wand, wor, trior, etc.)
	- TTY input from simulation script
	- Quick enable/disabled of probes
	- Zoom out for overview of large circuit
	- Drag-and-drop ports from port list box.
	- "Reverse" simulation (simulation checkpoints) - use ob_malloc in verga?
	- FPGA synthesis (or integration with existing synthesizer)
	- Export modules to separate files.
	- Export to synthesizable verilog (make it easy on synthesizers)
	- Support for defparam and modules using defparam