Release note updates and other docs tweaks

editions/prerelease/tiddlers/Release 5.1.15.tid

@@ -10,10 +10,7 @@ type: text/vnd.tiddlywiki
 !! New and Improved Plugins
 
 * New [[Amazon Web Services Plugin]] with primitives for running TiddlyWiki in the cloud
-
-!! Performance Improvements
-
-* 
+* New [[External Attachments Plugin]] that allows automatic creation of [[ExternalImages]] for TiddlyDesktop
 
 !! Translation Improvements
 
@@ -40,6 +37,7 @@ Another improvement that benefits users of translations is the addition of about
 * [[Extended|https://github.com/Jermolene/TiddlyWiki5/commit/596dfa1d5058e030a318e4a0f23d078500c3d154]] (and [[here|https://github.com/Jermolene/TiddlyWiki5/commit/a4d919f45caae393f99018e0d797980b3667867f]]) the DropzoneWidget and BrowseWidget to allow the deserializer to be manually specified
 * [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/523280362b529ee73229001a1bcd79272f483908]] new `tc-btn-*` classes to toolbar buttons allowing easier custom styling
 * [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/8293a77c6e6870960956dcf1501c687d2f88ea3c]] new ''mode'' attribute to the ViewWidget, allowing control over the parsing mode for wikified output formats
+* [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/d7a6816307f4fd47df29cb8e0343ea39c079a2b0]] new [[jsonstringify Operator]]
 
 !! Node.js Improvements
 
@@ -62,6 +60,7 @@ Another improvement that benefits users of translations is the addition of about
 
 * [[Extended|https://github.com/Jermolene/TiddlyWiki5/commit/0bc325025a61c265dafe7ce8750ea8deed2be51b]] `$tw.boot.boot()` to add a callback parameter
 * [[Extended|https://github.com/Jermolene/TiddlyWiki5/commit/d89010752a8b169a4917bde9a9028ddd871e743d]] navigation handling to pass original event data
+* [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/518f57f4bbc747c3675260eb3ffde1dc7468c805]] new `th-importing-files` hook
 
 ! Contributors
 

editions/tw5.com/tiddlers/$__StoryList.tid

@@ -0,0 +1,6 @@
+created: 20171031172440015
+list: [[External Attachments Plugin]] [[Railroad Plugin]] HelloThere GettingStarted Community
+modified: 20171031172440015
+title: $:/StoryList
+type: text/vnd.tiddlywiki
+

editions/tw5.com/tiddlers/filters/jsonstringify Operator.tid

@@ -11,4 +11,17 @@ tags: [[Filter Operators]] [[String Operators]]
 title: jsonstringify Operator
 type: text/vnd.tiddlywiki
 
+The following substitutions are made:
+
+|!Character |!Replacement |
+|`\` |`\\` |
+|`"` |`\\` |
+|`'` |`\\` |
+|`\r` (carriage return) |`\\r` |
+|`\n` (line feed) |`\\n` |
+|Characters from 0x00 to 0x1f |`\\x##` where ## is two hex digits |
+|Characters from 0x80 to 0xffff |`\\u####` where #### is four hex digits |
+
+Also see the [[stringify Operator]].
+
 <<.operator-examples "jsonstringify">>

editions/tw5.com/tiddlers/filters/stringify_Operator.tid

@@ -1,6 +1,6 @@
 caption: stringify
 created: 20161017153038029
-modified: 20161017153114691
+modified: 20171029155143797
 op-input: a [[selection of titles|Title Selection]]
 op-output: the input with ~JavaScript string encodings applied
 op-parameter: 
@@ -11,4 +11,18 @@ title: stringify Operator
 type: text/vnd.tiddlywiki
 from-version: 5.1.14
 
+The following substitutions are made:
+
+|!Character |!Replacement |
+|`\` |`\\` |
+|`"` |`\\` |
+|`\r` (carriage return) |`\\r` |
+|`\n` (line feed) |`\\n` |
+|`\x08` (backspace) |`\\b` |
+|`\x0c` (form feed) |`\\f` |
+|`\t` (tab) |`\\t` |
+|Characters from 0x00 to 0x1f and characters from 0x80 to 0xffff |`\\u####` where #### is four hex digits |
+
+Also see the [[jsonstringify Operator]].
+
 <<.operator-examples "stringify">>

editions/tw5.com/tiddlers/plugins/External Attachments Plugin.tid

@@ -0,0 +1,11 @@
+created: 20171031172325817
+list: 
+modified: 20171031172440017
+tags: OfficialPlugins [[Plugin Editions]]
+title: External Attachments Plugin
+type: text/vnd.tiddlywiki
+
+The External Attachments Plugin provides support for importing tiddlers as external attachments. That means that instead of importing binary files as self-contained tiddlers, they are imported as "skinny" tiddlers that reference the original file via the ''_canonical_uri'' field. This reduces the size of the wiki and thus improves performance. However, it does mean that the wiki is no longer fully self-contained.
+
+This plugin only works when using TiddlyWiki with platforms such as TiddlyDesktop that support the ''path'' attribute for imported/dragged files.
+