Prepare for new release

Messages/news-3.1.0.md

@@ -0,0 +1,16 @@
+News - 3.1.0
+============
+
+This release brings complete support for fish 3.1 syntax highlighting.
+This is an overview of changes. To see all the changes, go to
+Preferences > Package Settings > Fish > Changelog.
+
+The only behavioural change (ie, ignoring totally new features) relates to brace
+expansion, which no longer occurs unless a comma or variable appears within the
+braces. If you are targeting an older version of fish, then the compatibility
+highlighter will warn you when the syntax highlighting doesn't imply that this
+will happen even though it actually will.
+
+As a quick check whether there are any compatibility issues in your current
+script, you can now take a look at the status bar (bottom left of the Sublime
+Text window) where a summary will be displayed.

README.md

@@ -4,7 +4,7 @@ Friendly Interactive Shell (fish)
 A Sublime Text 2/3 package for the [friendly interactive shell](https://github.com/fish-shell/fish-shell).
 It features a robust syntax highlighting scheme that mimics the native highlighting behaviour of fish.
 
-The package currently supports up to fish version: **3.0**
+The package currently supports up to fish version: **3.1**
 
 Note: ST2 support is capped at fish version 2.7, with a limited set of the following features.
 

messages.json

@@ -1,5 +1,6 @@
 {
   "3.0.1": "Messages/changes.md",
+  "3.1.0": "Messages/news-3.1.0.md",
   "3.0.0": "Messages/news-3.0.0.md",
   "2.5.0": "Messages/news-2.5.0.md",
   "2.3.0": "Messages/news-2.3.0.md",