FMod - Drag Copy

School has officially started, so I've been busy with things that are more important than Abiathar development. I did today, however, manage to fix something that has been subtly bothering a few people for a long time. Apparently, The Omegamatic forces you to hold down the left mouse button while moving to the second corner of the rectangle to select for a copy operation, which I personally think is extraordinarily inconvenient. People of course have gotten used to it, so Abiathar now supports that for copying as well. The documented and recommended option is going to remain the usual "click one corner, click the other", but people are free to use whichever style they want. (It's nice for everyone to get what they want.)