Assertions

• Currently there are assertions in the shwing package. These ensure the proper thread, but will fail in Client/Server mode. -ea:edu.washington.biostr.sig.brainj3d.shwing... to enable just these assertions and -da:edu.washington.biostr.sig.brainj3d.shwing... to disable just these assertions
• There are many other assertions spread around, to enable these use -ea. On the server make sure to disable shwing assertions.