Gestion des updates

[bfoujols]

Mettre en place un système auto ckeck via un manifest.json
Link :
https://github.com/humbug/phar-updater (Archive)
https://github.com/consolidation/self-update
https://github.com/msiebeneicher/phar-self-updater
https://github.com/cpliakas/manifest-publisher
https://github.com/DavaHome/self-update