Make nunit tests run.

.nuget/NUnit.ConsoleRunner.3.7.0/LICENSE.txt

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+Copyright (c) 2017 Charlie Poole, Rob Prouse
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+

.nuget/NUnit.ConsoleRunner.3.7.0/NOTICES.txt

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+NUnit 3.0 is based on earlier versions of NUnit, with Portions
+
+Copyright (c) 2002-2014 Charlie Poole or 
+Copyright (c) 2002-2004 James W. Newkirk, Michael C. Two, Alexei A. Vorontsov or 
+Copyright (c) 2000-2002 Philip A. Craig

.nuget/NUnit.ConsoleRunner.3.7.0/tools/nunit-agent-x86.exe.config

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+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <!--
+   Nunit-agent only runs under .NET 2.0 or higher. 
+   The setting    useLegacyV2RuntimeActivationPolicy only applies 
+   under .NET 4.0 and permits use of mixed mode assemblies, 
+   which would otherwise not load correctly. 
+  -->
+  <startup useLegacyV2RuntimeActivationPolicy="true">
+    <!--
+     Nunit-agent is normally run by the console or gui
+     runners and not independently. In normal usage, 
+     the runner specifies which runtime should be used.
+     
+     Do NOT add any supportedRuntime elements here, 
+     since they may prevent the runner from controlling 
+     the runtime that is used!
+    -->
+  </startup>
+
+  <runtime>
+    <!-- Ensure that test exceptions don't crash NUnit -->
+    <legacyUnhandledExceptionPolicy enabled="1" />
+
+    <!-- Run partial trust V2 assemblies in full trust under .NET 4.0 -->
+    <loadFromRemoteSources enabled="true" />
+
+  </runtime>
+
+</configuration>

.nuget/NUnit.ConsoleRunner.3.7.0/tools/nunit-agent.exe.config

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+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <!--
+   Nunit-agent only runs under .NET 2.0 or higher. 
+   The setting    useLegacyV2RuntimeActivationPolicy only applies 
+   under .NET 4.0 and permits use of mixed mode assemblies, 
+   which would otherwise not load correctly. 
+  -->
+  <startup useLegacyV2RuntimeActivationPolicy="true">
+    <!--
+     Nunit-agent is normally run by the console or gui
+     runners and not independently. In normal usage, 
+     the runner specifies which runtime should be used.
+     
+     Do NOT add any supportedRuntime elements here, 
+     since they may prevent the runner from controlling 
+     the runtime that is used!
+    -->
+  </startup>
+
+  <runtime>
+    <!-- Ensure that test exceptions don't crash NUnit -->
+    <legacyUnhandledExceptionPolicy enabled="1" />
+
+    <!-- Run partial trust V2 assemblies in full trust under .NET 4.0 -->
+    <loadFromRemoteSources enabled="true" />
+
+  </runtime>
+
+</configuration>