Feature Request: Certificate Pinning

[msmollin]

It's a bit of a chore to implement correctly, but given we're privacy focused mapping application, it's probably a good idea to try to prevent MITM attacks.

Reference / Reading Material:

https://en.wikipedia.org/wiki/HTTP_Public_Key_Pinning

https://breakdev.org/how-i-hacked-an-android-app-to-get-free-beer/

https://www.paypal-engineering.com/2015/10/14/key-pinning-in-mobile-applications/