Updated Upstream (Paper)

Upstream has released updates that appear to apply and compile correctly

Paper Changes:
PaperMC/Paper@3fc9358 Show stacktrace when modifyItemStack fails
PaperMC/Paper@f175193 Expose server build information (#10729)

patches/api/0020-Rabid-Wolf-API.patch

@@ -0,0 +1,31 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Encode42 <me@encode42.dev>
+Date: Tue, 8 Dec 2020 17:15:15 -0500
+Subject: [PATCH] Rabid Wolf API
+
+
+diff --git a/src/main/java/org/bukkit/entity/Wolf.java b/src/main/java/org/bukkit/entity/Wolf.java
+index 4b84c04675775e2a606630b00de8afe51665cebc..ccbaf40a3131f477b4be2264401ad893725c1162 100644
+--- a/src/main/java/org/bukkit/entity/Wolf.java
++++ b/src/main/java/org/bukkit/entity/Wolf.java
+@@ -112,4 +112,20 @@ public interface Wolf extends Tameable, Sittable, io.papermc.paper.entity.Collar
+             return variant;
+         }
+     }
++
++    // Purpur start
++    /**
++     * Checks if this wolf is rabid
++     *
++     * @return whether the wolf is rabid
++     */
++    public boolean isRabid();
++
++    /**
++     * Sets this wolf to be rabid or not
++     *
++     * @param rabid whether the wolf should be rabid
++     */
++    public void setRabid(boolean rabid);
++    // Purpur end
+ }