Allow the version to influence what .deb gets installed

At present, only the latest can be installed. This is not reliable behavior
since regressions can happen, etc. We can leave it as the default for BC and
then allow for different architectures and versions.
[1.2.0] Add versioning
Embed versions in architecture.
Begin archiving at 0.3.0
Merge pull request #2 from SimpleFinance/allow-versioning

Allow versioning