Include $:/tags/Macro on core macros for backwards compatibility

This avoids breaking existing code that expects to be able to import the core macros with just $:/tags/Macro

@pmario - I suggest that future updates use the same approach

Thanks to @ericshulman for reporting the problem

core/wiki/macros/CSS.tid

@@ -1,5 +1,5 @@
 title: $:/core/macros/CSS
-tags: $:/tags/Global
+tags: $:/tags/Macro $:/tags/Global
 
 \procedure colour(name)
 \whitespace trim

core/wiki/macros/copy-to-clipboard.tid

@@ -1,5 +1,5 @@
 title: $:/core/macros/copy-to-clipboard
-tags: $:/tags/Global
+tags: $:/tags/Macro $:/tags/Global
 
 \whitespace trim
 

core/wiki/macros/diff.tid

@@ -1,5 +1,5 @@
 title: $:/core/macros/diff
-tags: $:/tags/Global
+tags: $:/tags/Macro $:/tags/Global
 
 \whitespace trim
 

core/wiki/macros/tag-picker.tid

@@ -1,5 +1,5 @@
 title: $:/core/macros/tag-picker
-tags: $:/tags/Global
+tags: $:/tags/Macro $:/tags/Global
 first-search-filter: [tags[]!is[system]search:title<userInput>sort[]]
 second-search-filter: [tags[]is[system]search:title<userInput>sort[]]
 

editions/tw5.com/tiddlers/messages/WidgetMessage_ tm-http-request Example Random Dog.tid

@@ -1,5 +1,5 @@
 title: WidgetMessage: tm-http-request Example - Random Dog
-tags: $:/tags/Global
+tags: $:/tags/Macro $:/tags/Global
 
 \procedure download-dog(url)
 

editions/tw5.com/tiddlers/messages/WidgetMessage_ tm-http-request Example Zotero.tid

@@ -1,5 +1,5 @@
 title: WidgetMessage: tm-http-request Example - Zotero
-tags: $:/tags/Global
+tags: $:/tags/Macro $:/tags/Global
 
 \procedure select-zotero-group()
 Specify the Zotero group ID to import