Fix all warnings

Add and make use of Lombok
Remove Mojang API
Remove ZipFileUtils
Remove StreamTools in favor of Apache IOUtils
Keyframe should be abstract all derivatives final
Replace clone in Keyframe with copy
Move some constants from GuiReplaySetttings to GuiConstants

src/main/java/eu/crushedpixel/replaymod/gui/online/GuiLoginPrompt.java

@@ -12,6 +12,7 @@ import org.lwjgl.input.Keyboard;
 
 import java.awt.*;
 import java.io.IOException;
+import java.util.List;
 
 public class GuiLoginPrompt extends GuiScreen {
 
@@ -78,12 +79,12 @@ public class GuiLoginPrompt extends GuiScreen {
         int tw = 150+5+strwidth;
         registerButton.xPosition = (width/2) - (tw/2) + strwidth+5;
 
+        @SuppressWarnings("unchecked")
+        List<GuiButton> buttonList = this.buttonList;
         buttonList.add(loginButton);
         buttonList.add(cancelButton);
         buttonList.add(registerButton);
 
-        strwidth2 = Math.max(fontRendererObj.getStringWidth(usernameLabel), fontRendererObj.getStringWidth(passwordLabel));
-
         initialized = true;
     }
 
@@ -126,7 +127,6 @@ public class GuiLoginPrompt extends GuiScreen {
 
     private String usernameLabel = I18n.format("replaymod.gui.username");
     private String passwordLabel = I18n.format("replaymod.gui.password");
-    private int strwidth2 = 100;
 
     @Override
     public void drawScreen(int mouseX, int mouseY, float partialTicks) {