How to install the __mitmproxy__ certificate authority on IOS devices:
### 1: Set up the Mail app on the device to receive email.
### 2: Mail the mitmproxy-ca-cert.pem file to the device, and tap on the attachment.
### 3: You will be prompted to install a profile. Click "Install":
### 4: Accept the warning by clicking "Install" again:
### 5: The certificate should now be trusted: