0.2.0

Changelog

b8c3944 Adds testify
bd393b8 Avoid having the license in the main.go
6ff5b71 Avoid to pass by reference to be able to make the test smoother
de5e3f1 Avoid to use this package name
73f2e76 Better isolation of the main functions
ef7e6a3 Makes splicit the existence of Preferences in the type
a251e76 New package for the errors with test
adb4642 Re-factor from chain design to error guards no defaul behavior
e356e67 Tests skaffold
83c2790 root command test placeholders