Merge branch 1.8-dev into 1.8.9-dev

1c888aa Add minVersion to mixin configs and bump bundled mixin version
10ce71e Fix mapwriter crash when opening replay for <MC1.12 (fixes #96)
5fb1cf3 Fix half-despawned player entities (see #93) when the entity is moved greater distances
adfe6a2 Fix NPE when spectated non-player entity despawns (fixes #94)
b27af27 Fix player entities being half-despawned after jumping in time (fixes #93)

src/main/java/com/replaymod/compat/mapwriter/mixin/MixinMinecraft.java

@@ -0,0 +1,35 @@
+package com.replaymod.compat.mapwriter.mixin;
+
+import com.replaymod.replay.ReplayModReplay;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.multiplayer.ServerData;
+import net.minecraftforge.fml.common.Loader;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+/**
+ * Approximately this for <1.12: https://github.com/Vectron/mapwriter/commit/68234520c7a3a0ae8201a085d7e66369900586ac
+ */
+@Mixin(Minecraft.class)
+public abstract class MixinMinecraft {
+
+    @Shadow
+    private ServerData currentServerData;
+
+    @Inject(method = "getCurrentServerData", cancellable = true, at = @At("HEAD"))
+    private void replayModCompat_fixBug96(CallbackInfoReturnable<ServerData> ci) {
+        if (currentServerData == null
+                && (Loader.isModLoaded("mapwriter") || Loader.isModLoaded("MapWriter"))
+                && ReplayModReplay.instance.getReplayHandler() != null) {
+            for (StackTraceElement elem : Thread.currentThread().getStackTrace()) {
+                if ("mapwriter.util.Utils".equals(elem.getClassName()) && "getWorldName".equals(elem.getMethodName())) {
+                    ci.setReturnValue(new ServerData(null, "replay", false));
+                    return;
+                }
+            }
+        }
+    }
+}