Release 0.5 changelog:
- added option to build without hotplug event support.
- fixed no-X11 build.
- fixed a bug making the daemon quit when the X server stops running.
- alleviated the need for XSync in xsend_event, now XFlush suffices.
- added support for devices which send EV_ABS instead of EV_REL HID events (space pilot).
- added serial device support with John Stone's libsball.
- fixed a bug making swap-xy option only affect translation, and not rotation.
- fixed XAUTHORITY issue.