evdev: wrap errors to errors::error
evdev-dump-events: show events by name
evdev: add code name getting functions
build: rename dump, use tags for sensors, add convenient targets
follow stdlib net module changes
buttonc: add key combo to signal motion-control
tools: buttonc: use getopt
motion-control: use getopt
motion-control: impl blocking and resetting via signal
add buttons reader for micro:bit
to be used with buttonc
Makefile: fix rules for pointerc, buttonc
tools: add buttonc: send key events from stdin
pointerc: support button events
pointerd: support button events
pointerd: exit cleanly on SIGINT
motion-control: signal: set SA_RESTART
gy-801-dump: signal: set SA_RESTART
motion-control: reduce yaw downscale
this make movements (subjectively?) more friendly in general case
sensors::L3G4200D: enable high-pass filter @0.05hz
this helps with fighting nearly-constant drift