Rearrange obsolete tests; test new v4 code

src/Directory.Build.props

@@ -2,16 +2,16 @@
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
     <PropertyGroup>
         <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
-        <VersionPrefix>2.0.8</VersionPrefix>
+        <VersionPrefix>4.0.0</VersionPrefix>
+        <VersionSuffix>alpha6a</VersionSuffix>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
-        <PackageReleaseNotes>- Adds package-provided script (available via Giraffe.Htmx.Common); use app.MapStaticAssets() for publish support, use builder.UseStaticWebAssets() for non-development/non-published execution
-- [View Engine] Deprecates Script.minified and Script.unminified (use Script.cdnMinified and Script.cdnUnminified instead)
-- Updates script tags to pull htmx 2.0.8 (no header or attribute changes)
-- Adds .NET 10 support
+        <PackageReleaseNotes>First htmx 4 alpha release of these libraries 
+- [Server] Marked removed headers as obsolete; added new HX-Source header
+- [View Engine] Marked removed attributes as obsolete
+- [View Engine] Added new attributes, modifiers, and support for new hx-partial tag
+- Updated script tags to pull htmx 4.0.0-alpha6
 
-See full release notes, including more info about the package-provided script, at https://git.bitbadger.solutions/bit-badger/Giraffe.Htmx/releases/tag/v2.0.8
-
-NOTE: As of 2.0.6, the CDN for htmx changed from unpkg.com to cdn.jsdelivr.net; sites with Content-Security-Policy headers will want to update their allowed script-src domains accordingly
+See package READMEs; this is not an update-and-forget-it release
         </PackageReleaseNotes>
         <Authors>danieljsummers</Authors>
         <Company>Bit Badger Solutions</Company>