2.2.4 & 2.0.225 (Dec 15, 2020)

* Changes in 2.2.4 (Dec 15, 2020)

+ Now the [I/O Test] window can be opened from the Pause menu as well as the
main menu.

+ High Frequency and Voice are added to the [I/O Test] window.

+ If "recording signals during ITI" is selected in the main menu, a warning
message is displayed while the task is paused, to indicate that data
acquisition is still in progress in the background.

+ The GraphicProperty adapter is improved to handle multiple properties
better.