Pass default atom to local-storage-atom

Allow use of local-storage-atom with non-core atom implementations, like
reagent's atom.  This is a breaking change that changes the expected
argument type from a default map to an atom o fthe required type
containing the default values.
Update to lein-modules 0.3.9
Updated project.clj, release notes and readme for 0.1.2
Updated version for next release cycle