Stable version 3.1.0

Refs #1584
Closes gh-1586
diff --git a/package.json b/package.json
index 0d5b7de..312d309 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "esparse": "./bin/esparse.js",
     "esvalidate": "./bin/esvalidate.js"
   },
-  "version": "3.0.0",
+  "version": "3.1.0",
   "files": [
     "bin",
     "dist/esprima.js"
diff --git a/src/esprima.ts b/src/esprima.ts
index 9a80f9b..90ad1a1 100644
--- a/src/esprima.ts
+++ b/src/esprima.ts
@@ -104,4 +104,4 @@
 export { Syntax } from './syntax';
 
 // Sync with *.json manifests.
-export const version = '3.0.0';
+export const version = '3.1.0';