Merge tag 'v2.3.1' into develop

Conflicts:
	README.md

CHANGES.md

@@ -1,3 +1,9 @@
+v2.3.1
+
+* fixes an issue where astral plane json escape sequences were
+  inadvertently being converted to the unicode replacement
+  character
+
 v2.3
 
 * switched to a faster implementation of string parsing in both

README.md

@@ -1,4 +1,4 @@
-# jsx (v2.3.0) #
+# jsx (v2.3.1) #
 
 an erlang application for consuming, producing and manipulating [json][json]. 
 inspired by [yajl][yajl]

src/jsx.app.src

@@ -1,7 +1,7 @@
 {application, jsx,
 [
     {description, "a streaming, evented json parsing toolkit"},
-    {vsn, "2.3.0"},
+    {vsn, "2.3.1"},
     {modules, [
         jsx,
         jsx_encoder,