add NUnit 4 constraints to docs

Author: bodewig

src/doc/monodoc/constraints-nunit4/ns-Org.XmlUnit.Constraints.xml

@@ -0,0 +1,6 @@
+<Namespace Name="Org.XmlUnit.Constraints">
+  <Docs>
+    <summary>NUnit 4.x Constraints on top of XMLUnit's core.</summary>
+    <remarks>NUnit 4.x Constraints on top of XMLUnit's core.</remarks>
+  </Docs>
+</Namespace>

src/doc/monodoc/core/index.xml

@@ -15,6 +15,10 @@
         contains <format type="text/html"><a
         href="http://nunit.org/">NUnit 3.x</a></format>
         constraints on top of <c>XMLUnit.Core</c>.</term></item>
+      <item><term><c>XMLUnit.NUnit4.Constraints</c>
+        contains <format type="text/html"><a
+        href="http://nunit.org/">NUnit 4.x</a></format>
+        constraints on top of <c>XMLUnit.Core</c>.</term></item>
     </list>
 
     <para>While XMLUnit is focussed on testing, parts of it may be useful
@@ -58,5 +62,5 @@
       under <format type="text/html"><a href="https://github.com/xmlunit/xmlunit.net/blob/main/LICENSE">the
       Apache License, Version 2.0</a></format>.</para></Remarks>
   <Copyright></Copyright>
-  <Title>XMLUnit.NET 2.10.1</Title>
+  <Title>XMLUnit.NET 2.11.0</Title>
 </Overview>

src/doc/monodoc/run-monodoc.sh

@@ -15,6 +15,9 @@ cp -r "$MY_DIR/core" "$MY_DIR/placeholders" "$MY_DIR/constraints-nunit2" "$MY_DI
 monodocer -pretty -importslashdoc:"$DEBUG_DIR/xmlunit-core.xml"\
           -assembly:"$DEBUG_DIR/xmlunit-core.dll"\
           -path:"$OUT_DIR/core"
+monodocer -pretty -importslashdoc:"$DEBUG_DIR/xmlunit-nunit4-constraints.xml"\
+          -assembly:"$DEBUG_DIR/xmlunit-nunit4-constraints.dll"\
+          -path:"$OUT_DIR/constraints-nunit4"
 monodocer -pretty -importslashdoc:"$DEBUG_DIR/xmlunit-nunit3-constraints.xml"\
           -assembly:"$DEBUG_DIR/xmlunit-nunit3-constraints.dll"\
           -path:"$OUT_DIR/constraints-nunit3"