Manually implement pull request squid-box#78 to fix the progress for compressing.

Author: harmwind

SevenZip/7z.dll

@@ -0,0 +1,36 @@
+using System;
+
+namespace SevenZip
+{
+  /// <summary>
+  /// Event args that pass a ulong total and a ulong completed value, that can be interpreted by the receiver.
+  /// </summary>
+  public sealed class DetailedProgressEventArgs : EventArgs
+  {
+    private readonly ulong _amountedCompleted;
+    private readonly ulong _total;
+
+    /// <summary>
+    /// Initializes a new instance of the DetailedProgressEventArgs class.
+    /// </summary>
+    /// <param name="amountCompleted">Amount of work that has been cumulatively completed.</param>
+    /// <param name="total">The total amount of work to complete.</param>
+    [CLSCompliant(false)]
+    public DetailedProgressEventArgs(ulong amountCompleted, ulong total)
+    {
+      _amountedCompleted = Math.Min(total, amountCompleted);
+      _total = total;
+    }
+
+    /// <summary>
+    /// Gets the amount of work that has been completed.
+    /// </summary>
+    [CLSCompliant(false)]
+    public ulong AmountCompleted => _amountedCompleted;
+    /// <summary>
+    /// Gets the total amount of work to do.
+    /// </summary>
+    [CLSCompliant(false)]
+    public ulong TotalAmount => _total;
+  }
+}

SevenZip/7z64.dll

@@ -1,15 +1,15 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyName>SevenZipSharp</AssemblyName>
-    <TargetFrameworks>netstandard2.0;net45;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>SevenZip.snk</AssemblyOriginatorKeyFile>
     <AssemblyTitle>SevenZipSharp</AssemblyTitle>
     <Company>Markovtsev Vadim</Company>
     <Product>SevenZipSharp</Product>
     <ProductVersion>1.0.0.0</ProductVersion>
-    <AssemblyVersion>1.0.0.0</AssemblyVersion>
-    <FileVersion>1.0.0.0</FileVersion>
+    <AssemblyVersion>1.5.1</AssemblyVersion>
+    <FileVersion>1.5.1</FileVersion>
     <InformationalVersion>1.0.0.0</InformationalVersion>
     <Description>7-zip native library wrapper</Description>
     <Copyright>Copyright (C) Markovtsev Vadim 2009, 2010, licensed under LGPLv3</Copyright>
@@ -19,6 +19,9 @@
     <RegisterForComInterop>false</RegisterForComInterop>
     <DefaultItemExcludes>$(DefaultItemExcludes);sfx\*</DefaultItemExcludes>
     <Configurations>Debug;Release;LiteDebug;LiteRelease</Configurations>
+    <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
+    <Version>1.5.1</Version>
+    <BaseOutputPath>bin\</BaseOutputPath>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DefineConstants>TRACE;DEBUG;UNMANAGED;SFX</DefineConstants>
@@ -35,12 +38,6 @@
     <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
   <ItemGroup>
-    <Content Include="7z.dll">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </Content>
-    <Content Include="7z64.dll">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </Content>
     <None Include="SevenZip.snk" />
   </ItemGroup>
   <ItemGroup Condition="$(DefineConstants.Contains('SFX'))">