Added lockfile, no idea why this was ignored before...
Note on breaking semver
Working on next version, bumping to 2.0.0.alpha
Moving files to lib and spec dirs
Changed interface from ziffern_inst.to_german to Ziffern.to_text
Updated the examples to the new interface
Added a release checklist
Update the lockfile to 2.0
Enable focused specs
Merge branch 'ziffern2' of github.com:alcesleo/ziffern into ziffern2