Preparing for v5.1.18 release

Phew!

editions/tw5.com/tiddlers/hellothere/HelloThere.tid

@@ -1,6 +1,6 @@
 created: 20130822170200000
 list: [[A Gentle Guide to TiddlyWiki]] [[Discover TiddlyWiki]] [[Some of the things you can do with TiddlyWiki]] [[Ten reasons to switch to TiddlyWiki]] Examples [[What happened to the original TiddlyWiki?]] [[HelloThumbnail - TWEUM2017]]
-modified: 20180512104329616
+modified: 20181206090053690
 tags: TableOfContents
 title: HelloThere
 type: text/vnd.tiddlywiki

editions/tw5.com/tiddlers/releasenotes/Release 5.1.18.tid

@@ -1,6 +1,7 @@
 caption: 5.1.18
-created: 20180512112829164
-modified: 20180821123858749
+created: 20181206090053690
+modified: 20181206090053690
+released: 20181206090053690
 tags: ReleaseNotes
 title: Release 5.1.18
 type: text/vnd.tiddlywiki