[0.6.3] Better cards handling

Hello there,
I'm coming with a pretty quick update featuring much better way of controlling cards. You may ask why it took me so long to get to this point. The answer is simple and stupid. I was playing on my phone :D I planned to release this game on a mobile, so I was designing for and playing on some of them. However I got lots of great ideas how to improve my card handling using mouse. So here we are. With much better solution. Thanks for your feedback! :)