retry after exception when getting GitHub token

[Hafsa-Naeem]

addresses one case of #20

[trz42]

Looks good. Some minor modifications suggested.

[trz42]

This always waits 0.8 seconds. Maybe the waiting time could be $n * (i+1)$ seconds? $n$ being the default/minimum waiting time (thus waiting time would increase linearly: $n, 2n, 3n, \dots$). Alternatively, the waiting time could be $n^{(i+1)}$ seconds (thus waiting time would increase exponentially: $n, n^2, n^3, \dots$).

[trz42]

To be on the safe side, maybe wait for $1 + i * n$ seconds.

[trz42]

Is the break needed?

[trz42]

Yes it's needed. Probably easier to read if the break is moved to after line 41.