New: system audio capture. PitchVis can now analyze the audio your phone is playing
instead of the microphone. Turn on "System Audio" in the debug screen (tap the visualization
to open it) and confirm Android's capture prompt. Audio only, no screen content is captured
and nothing leaves the device. Playback has to be running already, since PitchVis stops when
it goes to the background. Implements #8, thanks @brandonator365 for the request.
Fixes: the screen lock no longer engages when a system dialog interrupts a touch, the
debug buttons no longer react while the screen is locked, and the debug overlay now shows the
app version.
org.p1graph.pitchvis_30.apk is the F-Droid reproducible-build artifact: built from this tag
in the official F-Droid buildserver image and signed with the F-Droid release key
(SHA-256 0bc6a6264f97dd09fe46616daa0aea8a6bab013f12cfc4bccda54cc5b54c1a05). The Google Play
build is signed with a different key and the two are not cross-updatable.
