Updated Upstream (Paper & Airplane)

Upstream has released updates that appear to apply and compile correctly

Paper Changes:
PaperMC/Paper@c1b4899 Fix dupe uuid check on entity add (#6735)
PaperMC/Paper@3f043f7 Async catch modifications to critical entity state
PaperMC/Paper@bc43f40 Update jline and TCA (#6829)
PaperMC/Paper@d9e2817 Update paperweight to 1.1.13 (#6866)
PaperMC/Paper@3e310e0 Remove redundant and unneeded repos, reorder repos (#6867)
PaperMC/Paper@485d15f Update paperweight to 1.1.14 (#6868)
PaperMC/Paper@09d50a9 Added missing mappings (#6810)
PaperMC/Paper@0968cdd Move async catches back to where they were (#6869)
PaperMC/Paper@6f71b7c Deduplicate strings in ObfHelper (#6841)
PaperMC/Paper@ada930b Updated Upstream (Bukkit/CraftBukkit) (#6872)
PaperMC/Paper@06d82e0 Cache palette array (#6767)
PaperMC/Paper@70fe58d Expose the potential player cause of a lightning (#6782)
PaperMC/Paper@c20c9d3 Fix CraftNamespacedKey shenanigans (#6825)
PaperMC/Paper@29bb5a9 Add PlayerDeathEvent#getPlayer for clarity (#6859)
PaperMC/Paper@124d079 Fix issues with mob conversion (#6831)
PaperMC/Paper@22b0238 Add API for checking if a zombie has the option to break doors (#6855)
PaperMC/Paper@5af80b0 Add isCollidable methods to various places (#6870)
PaperMC/Paper@32ba088 Fix setPatternColor on tropical fish bucket meta (#6877)
PaperMC/Paper@87121ce Move `getTrackedPlayers` up from Player to Entity (#6569)
PaperMC/Paper@a923e33 Make despawn distance configs per-category, improve per category spawn limit config (#6717)
PaperMC/Paper@3f17694 Goat ram API (#6336)
PaperMC/Paper@cc2ecbc Add Raw Byte Entity Serialization (#6826)

Airplane Changes:
TECHNOVE/Airplane@e47949b Ty Penple <3
TECHNOVE/Airplane@86fee6b Update upstream

patches/api/0043-Extended-OfflinePlayer-API.patch

@@ -0,0 +1,125 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: YouHaveTrouble <youhavetrouble@youhavetrouble.me>
+Date: Sun, 22 Aug 2021 05:11:09 +0200
+Subject: [PATCH] Extended OfflinePlayer API
+
+
+diff --git a/src/main/java/org/bukkit/OfflinePlayer.java b/src/main/java/org/bukkit/OfflinePlayer.java
+index 7838731e0e16bdccfb79e74ceb64148f7c52db79..8ea59406ddb2293af66719a893e6f13d8377b81e 100644
+--- a/src/main/java/org/bukkit/OfflinePlayer.java
++++ b/src/main/java/org/bukkit/OfflinePlayer.java
+@@ -437,4 +437,114 @@ public interface OfflinePlayer extends ServerOperator, AnimalTamer, Configuratio
+      *     for the statistic
+      */
+     public void setStatistic(@NotNull Statistic statistic, @NotNull EntityType entityType, int newValue);
++
++    // Purpur start - OfflinePlayer API
++    /**
++     * Determines if the OfflinePlayer is allowed to fly via jump key double-tap like
++     * in creative mode.
++     *
++     * @return True if the player is allowed to fly.
++     */
++    public boolean getAllowFlight();
++
++    /**
++     * Sets if the OfflinePlayer is allowed to fly via jump key double-tap like in
++     * creative mode.
++     *
++     * @param flight If flight should be allowed.
++     */
++    public void setAllowFlight(boolean flight);
++
++    /**
++     * Checks to see if this player is currently flying or not.
++     *
++     * @return True if the player is flying, else false.
++     */
++    public boolean isFlying();
++
++    /**
++     * Makes this player start or stop flying.
++     *
++     * @param value True to fly.
++     */
++    public void setFlying(boolean value);
++
++    /**
++     * Sets the speed at which a client will fly. Negative values indicate
++     * reverse directions.
++     *
++     * @param value The new speed, from -1 to 1.
++     * @throws IllegalArgumentException If new speed is less than -1 or
++     *     greater than 1
++     */
++    public void setFlySpeed(float value) throws IllegalArgumentException;
++
++    /**
++     * Sets the speed at which a client will walk. Negative values indicate
++     * reverse directions.
++     *
++     * @param value The new speed, from -1 to 1.
++     * @throws IllegalArgumentException If new speed is less than -1 or
++     *     greater than 1
++     */
++    public void setWalkSpeed(float value) throws IllegalArgumentException;
++
++    /**
++     * Gets the current allowed speed that a client can fly.
++     *
++     * @return The current allowed speed, from -1 to 1
++     */
++    public float getFlySpeed();
++
++    /**
++     * Gets the current allowed speed that a client can walk.
++     *
++     * @return The current allowed speed, from -1 to 1
++     */
++    public float getWalkSpeed();
++
++    /**
++     * Gets the entity's current position
++     *
++     * @return a new copy of Location containing the position of this offline player
++     */
++    @Nullable
++    public Location getLocation();
++
++    /**
++     * Sets OfflinePlayer's location. If player is online, it falls back to the Player#teleport implementation.
++     *
++     * @param destination
++     * @return true if teleportation was successful
++     */
++    public boolean teleportOffline(@NotNull org.bukkit.Location destination);
++
++    /**
++     * Sets OfflinePlayer's location. If player is online, it falls back to the Player#teleport implementation.
++     *
++     * @param destination
++     * @param cause Teleport cause used if player is online
++     * @return true if teleportation was successful
++     */
++    public boolean teleportOffline(@NotNull org.bukkit.Location destination, @NotNull org.bukkit.event.player.PlayerTeleportEvent.TeleportCause cause);
++
++    /**
++     * Sets OfflinePlayer's location. If player is online, it falls back to the Player#teleportAsync implementation.
++     *
++     * @param destination
++     * @return <code>true</code> if teleportation successful
++     */
++    @NotNull
++    public java.util.concurrent.CompletableFuture<Boolean> teleportOfflineAsync(@NotNull Location destination);
++
++    /**
++     * Sets OfflinePlayer's location. If player is online, it falls back to the Player#teleportAsync implementation.
++     *
++     * @param destination
++     * @param cause Teleport cause used if player is online
++     * @return <code>true</code> if teleportation successful
++     */
++    @NotNull
++    public java.util.concurrent.CompletableFuture<Boolean> teleportOfflineAsync(@NotNull Location destination, @NotNull org.bukkit.event.player.PlayerTeleportEvent.TeleportCause cause);
++    // Purpur end - OfflinePlayer API
+ }