Release note update

editions/prerelease/tiddlers/Release 5.1.23.tid

@@ -1,6 +1,6 @@
 caption: 5.1.23
-created: 20200422173236649
-modified: 20200422173236649
+created: 20200509160320110
+modified: 20200509160320110
 tags: ReleaseNotes
 title: Release 5.1.23
 type: text/vnd.tiddlywiki
@@ -19,7 +19,7 @@ type: text/vnd.tiddlywiki
 * JSZip Plugin
 * [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/6a0ff7db1807f45b73061ced82f5a85f1a529bbf]] ability to dynamically create Zip files, giving TiddlyWiki the ability to build static sites within the browser
 * Freelinks Plugin
-** [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/1f354a972e0217e034d1f59d31577c1fd6b186f3]] support for ignoring case when matching titles
+** [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/1f354a972e0217e034d1f59d31577c1fd6b186f3]] (and [[here|https://github.com/Jermolene/TiddlyWiki5/commit/c9692d7a508cfdb0446e67061201961dca64d8dd]]) support for ignoring case when matching titles
 ** [[Fixed|https://github.com/Jermolene/TiddlyWiki5/commit/05e6c1bf62cd51df6aa025d0ad07f7959cde6fa0]] bug with autolinking within HTML `<a>` elements
 * Twitter Plugin
 ** [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/3a20fb1e3a41a032574d227a8c770a11ae0a5d58]] warning if wiki needs to be saved and reloaded
@@ -38,21 +38,26 @@ type: text/vnd.tiddlywiki
 
 ! Hackability Improvements
 
+* [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/4966f6ab625c8ce2c9f0812a726ba928d68ea00b]] new [[slugify Operator]] and [[duplicateslugs Operator]] for generating human readable filenames/URLs
 * [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/619c0752bd3c6e71d1fcdb74daa03cfe8257afe4]] new [[sortsub Operator]] for sorting by a user defined subfilter
 * [[Updated|https://github.com/Jermolene/TiddlyWiki5/commit/e71a27ac2d71f2e48f9e4e9156b59bb3ecc2a105]] LinkWidget to work within SVG elements
 * [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/c86a621d5d205e1ae0ce999b90ebe09addc45a9f]] ''accept'' attribute to the BrowseWidget
 * [[Extended|https://github.com/Jermolene/TiddlyWiki5/commit/77a929faa3a33768e52cf2a34ecbef9c554a6a7b]] ActionPopupWidget to allow popups to be dismissed
 * [[Extended|https://github.com/Jermolene/TiddlyWiki5/commit/2a8f7a9c503c9a6e4ea1bcd116be31ab6e90cf52]] [[favicon mechanism|Setting a favicon]] to support ''_canonical_uri'' images
+* [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/48dfadd85b8ebd788b44ed2c46108720742546df]] support for recording the startup timestamp in $:/info/startup-timestamp (see [[InfoMechanism]])
 
 ! Bug Fixes
 
+* [[Fixed|https://github.com/Jermolene/TiddlyWiki5/pull/4632]] hover effect for search dropdown items
 * [[Fixed|https://github.com/Jermolene/TiddlyWiki5/pull/4584]] restored missing parameter to `saveTiddler()` method sync adaptors
 * [[Fixed|https://github.com/Jermolene/TiddlyWiki5/commit/678e25f510786fbc38f505f8b594f57f39e33a04]] MakeLibraryCommand to skip non-directories
+* [[Fixed|https://github.com/Jermolene/TiddlyWiki5/pull/4601]] erroneous use of `$tw.wiki`
 
 ! Contributors
 
 [[@Jermolene|https://github.com/Jermolene]] would like to thank the contributors to this release who have generously given their time to help improve TiddlyWiki:
 
+* [[@Arlen22|https://github.com/Arlen22]]
 * [[@BramChen|https://github.com/BramChen]]
 * [[@BurningTreeC|https://github.com/BurningTreeC]]
 * [[@danielo515|https://github.com/danielo515]]