Browser-storage: Only save state tiddlers by default

And add it back to the prerelease now that it's a bit safer

editions/prerelease/tiddlywiki.info

@@ -14,7 +14,8 @@
 		"tiddlywiki/external-attachments",
 		"tiddlywiki/dynaview",
 		"tiddlywiki/codemirror",
-		"tiddlywiki/comments"
+		"tiddlywiki/comments",
+		"tiddlywiki/browser-storage"
 	],
 	"themes": [
 		"tiddlywiki/vanilla",

plugins/tiddlywiki/browser-storage/config/SaveFilter.tid

@@ -1,2 +1,2 @@
 title: $:/config/BrowserStorage/SaveFilter
-text: [all[]]
+text: [prefix[$:/state/]]

plugins/tiddlywiki/browser-storage/settings.tid

@@ -14,7 +14,7 @@ Click this button to clear browser storage and disable its use:
 
 ! Save Filter
 
-This filter determines which tiddlers will be saved to local storage. By default, it contains `[all[]]` meaning that it will attempt to save all tiddlers. Other useful values include `[prefix[$:/state/]]` to just save state tiddlers, thus preserving selected tabs, and the open/closed status of table of contents entries.
+This filter determines which tiddlers will be saved to local storage. By default, it contains `[prefix[$:/state/]]` to just save state tiddlers, thus preserving selected tabs, and the open/closed status of table of contents entries. Other useful values include `[all[]]` meaning that it will attempt to save all tiddlers.
 
 <$link to="$:/config/BrowserStorage/SaveFilter">Browser Storage Save Filter</$link>: <$edit-text tiddler="$:/config/BrowserStorage/SaveFilter" default="" tag="input" size="50"/>