Report slow events in milliseconds

nanoseconds is an overly accurate measurement for event handers, and
only ends up confusing and overly worrying people.

milliseconds is a much more normal and expected measurement in the
community, especially when we do not care about nanosecond level
accuracy.

BungeeCord-Patches/0051-Report-slow-events-in-milliseconds.patch

@@ -0,0 +1,31 @@
+From 2f6ad505879900bc8504ae63336e67f17b8cac8a Mon Sep 17 00:00:00 2001
+From: Shane Freeder <theboyetronic@gmail.com>
+Date: Tue, 26 Mar 2019 04:28:18 +0000
+Subject: [PATCH] Report slow events in milliseconds
+
+nanoseconds is an overly accurate measurement for event handers, and
+only ends up confusing and overly worrying people.
+
+milliseconds is a much more normal and expected measurement in the
+community, especially when we do not care about nanosecond level
+accuracy.
+
+diff --git a/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java b/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java
+index 81bd18f0..9408e6c2 100644
+--- a/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java
++++ b/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java
+@@ -435,9 +435,9 @@ public class PluginManager
+         long elapsed = System.nanoTime() - start;
+         if ( elapsed > 250000000 )
+         {
+-            ProxyServer.getInstance().getLogger().log( Level.WARNING, "Event {0} took {1}ns to process!", new Object[]
++            ProxyServer.getInstance().getLogger().log( Level.WARNING, "Event {0} took {1}ms to process!", new Object[] // Waterfall - human values
+             {
+-                event, elapsed
++                event, elapsed / 1000000 // Waterfall - human values
+             } );
+         }
+         return event;
+-- 
+2.21.0
+