When the the power_off switch is pulled a empty SYN_REPORT is generated and koreader crashed on a DEBUG line.
The DEBUG lines now generate identically spaced output, which makes it easier to read by eye.
While debugging ```GestureDetector:panState(tev)``` I saw that the TRACK ID never had -1 values .
So back to debugging ```input.lua```.
Now the Kobo Aura can pinch and expand.
Screen.width and Screen.height are now gone, use the methods
getWidth() and getHeight() to get the relevant data. They will
take blitbuffer/framebuffer rotation into account.