Increment device interface version (for r16466)

git-svn-id: https://valelab.ucsf.edu/svn/micromanager2/trunk@16531 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd

Author: mark

MMDevice/MMDevice.h

@@ -27,7 +27,7 @@
 // Header version
 // If any of the class definitions changes, the interface version
 // must be incremented
-#define DEVICE_INTERFACE_VERSION 67
+#define DEVICE_INTERFACE_VERSION 68
 ///////////////////////////////////////////////////////////////////////////////