Update version to 2.0.4

Author: myloveCc

src/NETCore.Encrypt/NETCore.Encrypt.csproj

@@ -12,10 +12,11 @@
     <PackageProjectUrl>https://github.com/myloveCc/NETCore.Encrypt</PackageProjectUrl>
     <RepositoryUrl>https://github.com/myloveCc/NETCore.Encrypt</RepositoryUrl>
     <RepositoryType>Github</RepositoryType>
-    <AssemblyVersion>2.0.3.0</AssemblyVersion>
-    <FileVersion>2.0.3.0</FileVersion>
-    <Version>2.0.3</Version>
-    <PackageReleaseNotes>MD5 hash result's length support 16 and 32.</PackageReleaseNotes>
+    <AssemblyVersion>2.0.4.0</AssemblyVersion>
+    <FileVersion>2.0.4.0</FileVersion>
+    <Version>2.0.4</Version>
+    <PackageReleaseNotes>1:Fix Rsa bug on linux/ mac
+2:Change the TargetFramework from netcoreapp2.0 to netstandard2.0</PackageReleaseNotes>
   </PropertyGroup>
 
   <ItemGroup>