The waveform display needed to be reworked because it crashed the software on Mac pretty often, and probably with other OS sometimes. Loading a sample was also long.
My goals, during this rework, was to provide :
1) a nice view not only based on aliased MIN / MAX when you zoom out,
2) a precise view when you zoom in.
So for 1), for each pixel (on the X-axis) the wave is displayed based on MIN / MAX for the limits, but also based on MEAN and STANDARD DEVIATION for the solid color inside. No blur filter of course.
For 2), the wave is displayed with antialiasing it's true, but it could not lose precision.