Older points are not plotted

[IsaiahGrace]

Hi! I love this project! It's great! I've played around with plotting my Google location history before with GIS software, but this is just so easy. It's perfect.

Anyway, older points don't seem to be plotted at all. My guess is that Google changed the structure of the JSON points at some time and this project isn't able to read the data from the earlier versions.

Here's an image I rendered with your tool with points up to August 2015. I did travel to Kenya, Europe, and the US during this time interval, so it looks like the map bounds have been correctly sized. But no points are visible.

I can take a look at the code in the next few days if I get some free time.