Warn people on the main screen that it doesn't work with swift 5 #212
Description
ℹ Please fill out this template when filing an issue.
All lines beginning with an ℹ symbol instruct you with
what info we expect.
Please remove this line and all above before submitting.
Report
What did you do?
ℹ Please replace this with what you did.
What did you expect to happen?
ℹ Please replace this with what you expected to happen.
What happened instead?
ℹ Please replace this with of what happened instead.
Project that demonstrates the issue
ℹ Please link to a project we can download that reproduces the issue.