0.11.21	 - Revert change introduced in 0.11.19 that made vte very unresponsive
	   with tall terminal windows. (bug #333776)
	 - Step up COALESCE_TIMEOUT and DISPLAY_TIMEOUT from 2ms to 10ms.
	   This is more compatible with the update timeout that we are doing
	   at 25ms, but needs testing.