They return as soon as the condition is fulfilled, so there is no harm in having long timeouts in case the tests are successful. The only drawback is that it takes longer in case of errors.

use the new DeviceAccess .DUMMY_WRITEABLE variable in tests. Writing to the readonly version now throws.

  DeviceModule and ControlSystemModule now do not take the optional prefix argument in their constructors any more. Use the [] operator instead to get the submodule.

- Add ExceptionHandlingDecorator and decorate all device variables with it.

- treat the two directions of bidirectional variables properly in testable mode (i.e. as individual variables with each one counter)
- fix a data race in testable mode in case a bidirectional variable rejected a value (was not holding a required lock)