I made added the changes I mentioned, so if you want you can test again. upgrade to 0.0.5. To implement it into HA, you can try running it as a custom component until it gets added officially.
I have never tried using a custom component, but I think all you need to do is create a directory in your config directory called custom_components and place the trackr.py file from here (https://github.com/w1ll1am23/home-assistant/blob/7214b8a1071b84ec4bf4b7e3364551be14cc9af2/homeassistant/components/device_tracker/trackr.py) inside. Then add the following to your config.
device_tracker:
- platform: trackr
username: your email
password: your password