ThisAssembly should not propagate transitively by default

Since we typically generate code that's intended for consumption within the project itself, we shouldn't cause other projects referencing the consuming project to also get ThisAssembly stuff.

Fixes #210

Author: kzu

src/Directory.props

@@ -9,6 +9,8 @@
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <RestoreSources>https://api.nuget.org/v3/index.json;https://pkg.kzu.io/index.json;</RestoreSources>
 
+    <!-- ThisAssembly shouldn't propagate transitively by default -->
+    <DevelopmentDependency>true</DevelopmentDependency>
     <PackageProjectUrl>https://clarius.org/ThisAssembly</PackageProjectUrl>
 
     <!-- See https://github.com/scriban/scriban#source-embedding -->