v0.40.0: visualizer settings — laser screen angles, radial resolution

Laser: the screen's distance, pitch, yaw and roll are sliders (the beam ray
is intersected with the turned screen; the drawing shrinks only when a
steep screen would push the figure out of view), and the afterimage can be
turned off. The membrane is now a slack 50 Hz balloon whose split rocking
pairs land in the bass, so it draws loops ~60% of the time instead of ~25%.

Radial: fading trails can be turned off; the number of frequency bands and
volume steps are sliders; ghosts fade from the dot's own color into the
background; a 4096-point FFT and interpolation end the flat bass arcs; and
"Even out bass and treble" takes the song's overall tilt out so the dots
sit on a circle.

lintunes/__init__.py

@@ -1,3 +1,3 @@
 """LinTunes — iTunes-style music library manager and player for Linux."""
 
-__version__ = "0.39.0"
+__version__ = "0.40.0"