gestion des versions :

* dossier des versions = FullString
* Suppressioni de versions

src/nuget-host/Data/PackageVersion.cs

@@ -18,8 +18,8 @@ namespace nuget_host.Data
         [Required]
         public int Patch { get; set; }
 
-        [StringLength(32)]
-        [Required][Key]
+        [StringLength(256)]
+        [Required]
         public string FullString { get; set; }
         public bool IsPrerelease { get; set; }