Problem
Our email notifications currently don't include any information about the sender. We should include the customer/sender email in the message if it's available.

Solution
If the customer sending the message has an email address, display it in the email notification. (Here's where the logic lives: https://github.com/papercups-io/papercups/blob/master/lib/chat_api/messages.ex#L206

The following guides may be improved with unit test examples:

• https://github.com/danschultzer/pow/blob/master/guides/custom_controllers.md
• https://github.com/danschultzer/pow/blob/master/guides/sync_user.md
• https://github.com/danschultzer/pow/blob/master/guides/lock_users.md
• https://github.com/danschultzer/pow/blob/master/guides/user_roles.md

There's alread

We want to add Elixir.Faker.Pokemon.Ru.location/0.

If this is the first time you contributing check out this guide.

Comment below if you want to start working on the issue and never be afraid to ask questions.

If you contribute module that does not exist yet [here is a good example PR](elixirs/faker#288

The package creation/splitting is heavily dependant on zones. Prevent deletion of the last available zone.

With the recent release of Phoenix 1.5 🎉 https://elixirforum.com/t/phoenix-v1-5-0-released/30693
Now is a great time to go through this example/tutorial with a fresh pair of eyes and completely update it (including) links to code snapshots. We can also extend it to include auth_plug #25 🔐 and presence #32 🚀.

• Checkout master
• Create new branch e.g: `update-t