Add unpublish support, curl cli support

src/CommandProvider.php

@@ -12,7 +12,7 @@ class CommandProvider implements CommandProviderCapability
             new Command\PackageBuildCommand(),
             new Command\PackageLoginCommand(),
             new Command\PackagePublishCommand(),
-            // new Command\PackageUnpublishCommand(),
+            new Command\PackageUnpublishCommand(),
         ];
     }
 }