UPower 0.99.8

[Richard Hughes]

Version 0.99.8
~~~~~~~~~~~~~~
Released: 2018-06-18

New Features:
 - Lock down systemd service file
 - Add support for "Unknown" capacity level, and clarify handling
   of devices with coarse battery levels
 - Add a new version of up_client_get_devices() which unrefs contents

Bugfixes:
 - Fix warnings when D-Bus related properties change
 - Prevent crash after attaching an Apple TV, and support newer
   versions of iOS
 - Lower severity of "unhandled action" messages
 - Fix battery status on MacBooks after a plug or unplug event
 - Fix double-close on exit

Richard.