:+1: version and update docs

CHANGES.md

@@ -1,10 +1,12 @@
 CHANGES
 ========
 
-## 1.2.7
+## 1.2.8
 
 * Fix: The problem that redirect doesn't work when using 'crowi-plus Simplified Behavior'
 
+## 1.2.7 (Missing number)
+
 ## 1.2.6
 
 * Fix: The problem that page_list widget doesn't show the picture of revision.author

package.json

@@ -1,6 +1,6 @@
 {
   "name": "crowi-plus",
-  "version": "1.2.8-RC",
+  "version": "1.2.9-RC",
   "description": "Enhanced Crowi",
   "tags": [
     "wiki",