Merge branch '6.0' into 6.0-core-tests-fixes

Author: alex-kulakov

ChangeLog/6.0.5_Z_Final.txt

@@ -0,0 +1,9 @@
+[main] EntitySet<T>.Prefetch() now re-fetches items in Client profile and in certain transaction isolation levels
+[main] Prefetch extension re-fetches EntitySet<T> items in Client profile and in certain transaction isolation levels
+[main] SessionScope is not derrived from Scope but stand alone class. Functionality remains the same.
+[main] Improved session activation mechanism to work with asynchronous Session opening
+[main] Fixed SimpleCommandProcessor internal command allocation issue which caused 'swollowing' of genuin exception
+[main] Fixed certain cases of incorrect temporary table column structure while using grouping
+[main] Correct command disposal by CommandProcessors
+[mysql] Updated client library package
+[log4net] Updated log4net package

Orm/Xtensive.Orm.MySql/Xtensive.Orm.MySql.csproj

@@ -17,7 +17,7 @@
     <WarningLevel>2</WarningLevel>
   </PropertyGroup>
   <ItemGroup Condition="'$(TargetFramework)'=='netstandard2.0'">
-    <PackageReference Include="MySql.Data" Version="6.10.4" />
+    <PackageReference Include="MySql.Data" Version="6.10.7" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Xtensive.Orm\Xtensive.Orm.csproj" />