Updated version for next release cycle
Move lein-pallet-release to its own profile
Use create-ns rather than in-ns

Simplifies the generated code, removing a try…finally form.
Rename project to lein-shorthand

Now uses the :shorthand project key for configuration.
Remove :shorthand-protocol-fns key

This was incorrect, as the :protocol metadata requires the var of the
protocol as a value.
Revert lein-pallet-release to dev profile
Updated project.clj, release notes and readme for 0.4.0
Merge release/0.4.0