Describe the bug
In kWaveSimulation.py, the transmit_apodization_mask is assigned to self.transducer_transmit_apodization, but it does not appear to be applied to the input signal at any point in the code.

To Reproduce
(examples/us_bmode_phased_array)
In ktransducer,py, set the return value of transmit_apodization_mask to an all-zero mask.
No difference in the simulation results.

Expected behavior
windowing is applied to the input signal.