* Add in much more flexible manifest manipulation, uses cloustache and
  an :android :manifest map to substitute into a template. It also
  inserts the current version number and generates an appropriate
  version code.

* Add ability to rename manifest package - useful for installing multiple
versions of the application at once (for example having a development
version and a release version installed at the same time so that you can
use the release version day to day without having to reinstall)