Updated Upstream (Bukkit/CraftBukkit/Spigot)

Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
4b08dbc5 PR-752: Make Leaves Waterlogged
de323fc9 Downgrade dependency version

CraftBukkit Changes:
c3f219edb Fix missing abstract in CraftLeaves
886e6d8c8 SPIGOT-7038: Setting title or subtitle to empty string causes the player to disconnect
6c302a5e3 Make Leaves Waterlogged
53b681be5 Downgrade dependency version

Spigot Changes:
ee737122 Fixed system messages shown in action bar
f343df82 SPIGOT-7036: Don't use CHAT message type
63a06049 SPIGOT-7035: Actionbar Sending in Main Chat

patches/server/0393-Implement-Player-Client-Options-API.patch

@@ -97,10 +97,10 @@ index b4d5817998d8aa0c6e6eb3c01af0bc1d804e794b..108561244fa1062cd98be76fdff471fd
          if (getMainArm() != packet.mainHand()) {
              PlayerChangedMainHandEvent event = new PlayerChangedMainHandEvent(this.getBukkitEntity(), getMainArm() == HumanoidArm.LEFT ? MainHand.LEFT : MainHand.RIGHT);
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-index 52b00369facc700079dbddc35291072977c2b8ce..4c3321a0645cfdbb651a87078d577776c62729a3 100644
+index 9bce12ed1842934fb05233337d2571ad44f7fe07..9747023b0102c055e56b5a8434d3e003d1ed1059 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-@@ -575,6 +575,24 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+@@ -574,6 +574,24 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
      public void setSendViewDistance(int viewDistance) {
          throw new UnsupportedOperationException("Per-Player View Distance APIs need further understanding to properly implement (There are per world view distances though!)"); // TODO
      }