Implement IReadOnlyDictionary

Author: xPaw

.editorconfig

@@ -2,6 +2,9 @@ root = true
 
 [*.cs]
 
+# CA1710: Identifiers should not have incorrect suffix (KVObject implements IReadOnlyDictionary but is not a dictionary)
+dotnet_diagnostic.CA1710.severity = none
+
 # CA1711: Identifiers should not have incorrect suffix
 dotnet_diagnostic.CA1711.severity = none
 

ValveKeyValue/ValveKeyValue/KVObject.cs

@@ -11,7 +11,7 @@ namespace ValveKeyValue
     /// Keys (names) are stored in the parent container, not on the child.
     /// </summary>
     [DebuggerDisplay("{DebuggerDescription}")]
-    public partial class KVObject : IEnumerable<KeyValuePair<string, KVObject>>
+    public partial class KVObject : IReadOnlyDictionary<string, KVObject>
     {
         #region Properties
 

ValveKeyValue/ValveKeyValue/KVObject_IEnumerable.cs

@@ -2,7 +2,7 @@
 
 namespace ValveKeyValue
 {
-    public partial class KVObject : IEnumerable<KeyValuePair<string, KVObject>>
+    public partial class KVObject
     {
         /// <inheritdoc/>
         public IEnumerator<KeyValuePair<string, KVObject>> GetEnumerator()