Timings v2

TODO: Add #isStopping to FullServerTickHandler#stopTiming in patch 191
expose isRunning

paper-api/src/main/java/org/bukkit/command/BufferedCommandSender.java

@@ -0,0 +1,25 @@
+package org.bukkit.command;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @deprecated Timings will be removed in the future
+ */
+@Deprecated(forRemoval = true)
+public class BufferedCommandSender implements MessageCommandSender {
+    private final StringBuffer buffer = new StringBuffer();
+    @Override
+    public void sendMessage(@NotNull String message) {
+        buffer.append(message);
+        buffer.append("\n");
+    }
+
+    @NotNull
+    public String getBuffer() {
+        return buffer.toString();
+    }
+
+    public void reset() {
+        this.buffer.setLength(0);
+    }
+}