Re-organise

Signed-off-by: Oliver Davies <oliver@oliverdavies.uk>

working-without-workspace/sections/shell.rst

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+.. raw:: pdf
+
+   PageBreak titlePage
+
+.. class:: centredtitle
+
+Z Shell
+
+.. raw:: pdf
+
+   PageBreak standardPage
+
+Why zsh?
+========
+
+* Replacement for the ``bash`` shell
+* Default on macOS
+* Separate to "oh-my-zsh"
+* OMZSH plugins and themes can be installed using ``zplug``
+* Aliases
+* Globbing and expanding
+
+Aliases
+=======
+
+.. code-block:: bash
+   :linenos:
+   :include: code/aliases.sh
+
+.. raw:: pdf
+
+   TextAnnotation "Can be used to override default behaviour or to add new commands and shortcuts."
+
+Globbing and expanding
+======================
+
+Changing a file prefix:
+
+``mv index.{html,twig}``
+
+``mv index.html index.twig``
+
+|
+
+Creating two files with different prefixes:
+
+``touch my-component.{config.yml,twig}``
+
+|
+
+Creating a range of files:
+
+``touch {1..10}.php``
+
+Auto-expanding
+==============
+
+.. code-block:: bash
+   :linenos:
+
+   expand-alias-space() {
+     [[ $LBUFFER =~ "\<(''${(j:|:)baliases})\$" ]]; insertBlank=$?
+     if [[ ! $LBUFFER =~ "\<(''${(j:|:)ialiases})\$" ]]; then
+       zle _expand_alias
+     fi
+
+     zle self-insert
+
+     if [[ "$insertBlank" = "0" ]]; then
+       zle backward-delete-char
+     fi
+   }
+
+   zle -N expand-alias-space
+
+   bindkey " " expand-alias-space
+
+.. raw:: pdf
+
+   TextAnnotation "More like snippets than aliases."