:+1: version and update docs

CHANGES.md

@@ -1,11 +1,15 @@
 CHANGES
 ========
 
-## 3.1.0-RC
+## 3.1.1
+
+* Improvement: Add 'future' theme
+
+
+## 3.1.0
 
 * Improvement: Group Access Control List - Select group modal
 * Improvement: Better input on mobile
-* Improvement: Add 'future' theme
 * Improvement: Detach code blocks correctly
 * Improvement: Auto-format markdown table which includes multibyte text
 * Improvement: Show icon when auto-format markdown table is activated

package.json

@@ -1,6 +1,6 @@
 {
   "name": "growi",
-  "version": "3.1.0-RC2",
+  "version": "3.1.1-RC",
   "description": "Team collaboration software using markdown",
   "tags": [
     "wiki",