Cleaned-up gatom behavior
* gatom due to its reliance on the "click" legacy message lacks adequate information to allow for some of the advanced functionality of the iemgui numbox. This, coupled with other legacy behavior (e.g. having a min and max that does not apply to the values coming into its inlet) in my view make vanilla gatom a legacy object. This also makes a distinguishing factor between it and the iemgui numbox. * Nonetheless, new features persist, such as drag and shift+drag that offers +-1 and +-0.01 increments respectively inside the number gatom, the ability to append to the symbol gatom text by shift+clicking onto it, and shift+delete deletes all the text at once inside the gatom symbol.