Key file implemented!

Key Derivation setting added
More unit tests created
Some cleanup in lib
WIP Argon2 save

ModernKeePassLib/Serialization/BinaryReaderEx.cs

@@ -75,7 +75,7 @@ namespace ModernKeePassLib.Serialization
 				if(m_sCopyTo != null) m_sCopyTo.Write(pb, 0, pb.Length);
 				return pb;
 			}
-			catch(Exception)
+			catch(Exception ex)
 			{
 				if(!string.IsNullOrEmpty(m_strReadExcp))
 					throw new IOException(m_strReadExcp);

ModernKeePassLib/Utility/MemUtil.cs

@@ -249,8 +249,8 @@ namespace ModernKeePassLib.Utility
 		/// <summary>
 		/// Set all bytes in a byte array to zero.
 		/// </summary>
-		/// <param name="pbArray">Input array. All bytes of this array will be set
-		/// to zero.</param>
+		/// <param name="pbArray">Input array. All bytes of this array
+		/// will be set to zero.</param>
 		public static void ZeroByteArray(byte[] pbArray)
 		{
 			Debug.Assert(pbArray != null);

ModernKeePassLib/Utility/StrUtil.cs

@@ -20,17 +20,18 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
-using System.Text;
+using System.Diagnostics;
 using System.Drawing;
+using System.Globalization;
 using System.IO;
+using System.Text;
 using System.Text.RegularExpressions;
+
 #if ModernKeePassLib
 using Windows.Security.Cryptography;
 #else
 using System.Security.Cryptography;
 #endif
-using System.Globalization;
-using System.Diagnostics;
 
 using ModernKeePassLib.Collections;
 using ModernKeePassLib.Cryptography.PasswordGenerator;