0.5

• Rewrite readme, add both cattmate.service and 60-powermate.rules for
  systemd and udev rules respectively.

0.12

• Add MIN/MAX alerts per #3
• fix #1

0.11

• refactored code to be cleaner
• put Ssd1306 in it's own class

0.10

• first decently functional code
• known issue in #1 though