Merge pull request #71 from Over-Run/bugfix

Author: squid233

modules/overrungl.opengl/src/main/java/overrungl/opengl/GL.java

@@ -22,7 +22,7 @@
  * @author squid233
  * @since 0.1.0
  */
-public non-sealed class GL extends GL46 {
+public class GL extends GL46 {
     /// Creates an instance of OpenGL functions.
     ///
     /// @param function a function that returns the address of specific OpenGL function