Some name-breaking changes so master is now v3. V2 will continue to be the code on nuget for now.

NTwain/Internals/ICommittable.cs

@@ -2,8 +2,15 @@
 
 namespace NTwain.Internals
 {
+    /// <summary>
+    /// For something that is in a pending state until finalized with a Commit() call.
+    /// The changes are rolled back if it is disposed without being committed.
+    /// </summary>
     interface ICommittable : IDisposable
     {
+        /// <summary>
+        /// Commits the pending changes.
+        /// </summary>
         void Commit();
     }
 }