Bump version
Overview of changes:
* Added build-time tests
Saturnin Demo now demonstrates how to add tests using TFKit and
enable them on both Fedora and Debian. (This means dependency bump
to Saturnin 0.4.8, since overriding SATURNIN_CONF_PATH was not
available, which made config-related tests hard in staged
installations.)
* Enabled overriding path variables in launcher
Launcher used to hard-code all environment variables. This made
testing in staged installations hard.
* Updated meta-data and templates
An amount of smaller changes has been done to improve readability,
maintainability and overall looks of packaging meta-data.