Update Travis's acquisition script.
Do not supply list of known values for read-only AT_Enums (at this time, there is no known reason to want these values, but there is a downside to providing them, in that providing a list of known values falsely suggests that these values may be assigned).
Reduce high pass filter ceiling such that unfocused worms and other similar medium-scale gradients do not trigger Brenner response.
Merge branch 'master' of ssh://github.com/erikhvatum/zplab