Check for a new version and notify the admin(s)

[alexjustesen]

Is your feature request related to a problem? Please describe.

Currently there is no active notification system to alert when a new version of Speedtest Tracker is available.

Describe the solution you'd like

A curl command can be used to get GitHub's latest release...

curl https://api.github.com/repos/alexjustesen/speedtest-tracker/releases/latest -s 
    | grep '"tag_name":' 
    | sed -E 's/.*"([^"]+)".*/\1/'

# v0.13.4

Source: https://gist.github.com/lukechilds/a83e1d7127b78fef38c2914c4ececc3c