Rename our allwpilib (which is now 2020) to not have 2019 in the name

Change-Id: I3c07f85ed32ab8b97db765a9b43f2a6ce7da964a
diff --git a/hal/src/dev/java/DevMain.java b/hal/src/dev/java/DevMain.java
new file mode 100644
index 0000000..8cdb8ba
--- /dev/null
+++ b/hal/src/dev/java/DevMain.java
@@ -0,0 +1,15 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2018 FIRST. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+public final class DevMain {
+  public static void main(String[] args) {
+
+  }
+
+  private DevMain() {
+  }
+}