Register email 4.1

Register email v4.1 changes:

Fixed issue where region was empty, but had valid city and country.

Register email v4.0 changes:

Added Timezone to email.

Register email v3.9 changes:

Fixed issue with (Trying to get property 'field_value' of non-object) error.

Register email v3.8 changes:

Added code to prevent server error log when IP address not found in xf_ip table.

Register email v3.7 changes:

Fixed issue with Location determined by IP.

Register email v3.6 changes:

Now uses ipapi.co for location lookup.

Register email v3.5 changes:

Fixed issue with whatismyipaddress link not showing if ipstack access key is not entered.

Register email v3.4 changes:

Fixed issue with custom user field title.

Register email v3.3 changes:

Added code to prevent server error log if country information is missing during lookup.

Register email v3.2 changes:

Added location entered to email if Required location is enabled.