* Change notification when extension is not found
- Removes legacy downloadFile and downloadJson in favour of using
`node-fetch`
- A notification will be displayed if the URL provided results in a
status of 404
Signed-off-by: Sebastian Malton <sebastian@malton.name>
* Resolve PR comments
Signed-off-by: Sebastian Malton <sebastian@malton.name>
Signed-off-by: Sebastian Malton <sebastian@malton.name>