v2.0.0

Breaking change, setAllVars is now glci sav.

• Introduce sub-commands to add the possibility to set a variable on the fly, without a gitlab.env.yml.
• The token can be retrieved from env variable, GITLAB_TOKEN

New commands are :

• glci sv <options> to set one variable.
• glci sav <options> to set all variables in gitlab.env.yml.