Sandcastle Helpfile - Update version numbers

Author: amaitland

CefSharp.shfbproj

@@ -7,7 +7,7 @@
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <SchemaVersion>2.0</SchemaVersion>
     <ProjectGuid>{3675c5a0-d2d7-461e-bd9a-e2974b9c3141}</ProjectGuid>
-    <SHFBSchemaVersion>2015.6.5.0</SHFBSchemaVersion>
+    <SHFBSchemaVersion>2017.9.26.0</SHFBSchemaVersion>
     <!-- AssemblyName, Name, and RootNamespace are not used by SHFB but Visual Studio adds them anyway -->
     <AssemblyName>Documentation</AssemblyName>
     <RootNamespace>Documentation</RootNamespace>
@@ -31,7 +31,7 @@
       <DocumentationSource sourceFile="CefSharp\CefSharp.csproj" />
       <DocumentationSource sourceFile="CefSharp.Core\CefSharp.Core.vcxproj" />
     </DocumentationSources>
-    <HelpFileVersion>63.0.0</HelpFileVersion>
+    <HelpFileVersion>67.0.0</HelpFileVersion>
     <MaximumGroupParts>2</MaximumGroupParts>
     <NamespaceGrouping>True</NamespaceGrouping>
     <SyntaxFilters>C#, Managed C++</SyntaxFilters>
@@ -56,8 +56,8 @@
     <ApiFilter>
       <Filter entryType="Namespace" fullName="CefSharp.Internals" isExposed="False" xmlns="" />
     </ApiFilter>
-    <VisibleItems>InheritedMembers, InheritedFrameworkMembers, Protected, ProtectedInternalAsProtected</VisibleItems>
-    <HeaderText>Version 63.0.0</HeaderText>
+    <VisibleItems>InheritedMembers, InheritedFrameworkMembers, Protected, ProtectedInternalAsProtected, EditorBrowsableNever, NonBrowsable</VisibleItems>
+    <HeaderText>Version 67.0.0</HeaderText>
     <CopyrightHref>https://raw.githubusercontent.com/cefsharp/CefSharp/master/LICENSE</CopyrightHref>
   </PropertyGroup>
   <!-- There are no properties for these groups.  AnyCPU needs to appear in order for Visual Studio to perform