[BREAKING] Bump NLog from 4.7 to 5.1

Author: niemyjski

src/Platforms/Exceptionless.NLog/Exceptionless.NLog.csproj

@@ -25,7 +25,7 @@
   </ItemGroup>
 
   <ItemGroup Label="Package References">
-    <PackageReference Include="NLog" Version="4.7.15" />
+    <PackageReference Include="NLog" Version="5.1.0" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' " Label="Build">

src/Platforms/Exceptionless.NLog/readme.txt

@@ -36,12 +36,8 @@ minimum log level that will be used until the client retrieves settings from the
 <?xml version="1.0" encoding="utf-8" ?>
 <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <extensions>
-    <add assembly="Exceptionless.NLog"/>
-  </extensions>
-
   <targets async="true">
-    <target xsi:type="Exceptionless" name="exceptionless" apiKey="API_KEY_HERE">
+    <target xsi:type="Exceptionless, Exceptionless.NLog" name="exceptionless" apiKey="API_KEY_HERE">
       <field name="host" layout="${machinename}" />
       <field name="identity" layout="${identity}" />
       <field name="windows-identity" layout="${windows-identity:userName=True:domain=False}" />