It caches the decompiled code and does not refresh when the binary changes #446

I like this tool a lot but recently I discovered a big issue. I updated a JAR file but when I opened it in the tool it was still showing me old decompiled code. It caused me lot of wasted time as I spent days trying to debug why my intended changes were not happening. Turned out the problem was not in my JAR file but jd-gui. When I closed the application, re-opened it and then opened the JAR file, I could see my changes in the JAR. I am using jd-gui-1.6.6.