clarify statement about raising a message inside spawn/1
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Merge pull request #375 from tonini/clarify-raise-in-spawn

clarify statement about raising a message inside spawn/1
Release v1.0.1
Match description with code example
Merge pull request #376 from niklas/patch-1

Match description with code example
Clarify that structs can be used with Map module

Previously, the documentation only mentioned that the `Dict` module would not work with structs.

Also clean up response values, since keys are output in alphabetical order.
Merge pull request #377 from SenecaSystems/master

Clarify that structs can be used with Map module
Fix missing logger app in KV Server

The end of chapter 9 suggests suppressing the logger during the KV
Server restart in the test setup, but :logger was not included as
an OTP application dependency in the mix.exs file, resulting in an
error.

This commit adds the :logger dependency back to the kv_server
applications.
Merge pull request #378 from readysetmark/master

Fixes #370 missing logger app in KV Server