minor code improvements

ModpackUpdater.Model/ModpackInfo.vb

@@ -2,7 +2,6 @@
 
 Imports Newtonsoft.Json
 Imports Newtonsoft.Json.Converters
-Imports Newtonsoft.Json.Linq
 
 Public Class ModpackInfo
 
@@ -12,11 +11,11 @@ Public Class ModpackInfo
     Public Property Version As Version
 
     Public Sub Save(mcRoot As String)
-        File.WriteAllText(GetFilePath(mcRoot), JObject.FromObject(Me).ToString)
+        File.WriteAllText(GetFilePath(mcRoot), JsonConvert.SerializeObject(Me))
     End Sub
 
     Public Shared Function Load(mcRoot As String) As ModpackInfo
-        Return JObject.Parse(File.ReadAllText(GetFilePath(mcRoot))).ToObject(Of ModpackInfo)
+        Return JsonConvert.DeserializeObject(Of ModpackInfo)(File.ReadAllText(GetFilePath(mcRoot)))
     End Function
 
     Public Shared Function HasModpackInfo(mcRoot As String) As Boolean