chore: add changelog 4.2.8

CHANGELOG.md

@@ -1,3 +1,13 @@
+<a name="4.2.8"></a>
+## [4.2.8](https://github.com/QingWei-Li/docsify/compare/v4.2.7...v4.2.8) (2017-08-10)
+
+
+### Features
+
+* **compiler:** support for setting target attribute for link, fixed [#230](https://github.com/QingWei-Li/docsify/issues/230) ([7f270f9](https://github.com/QingWei-Li/docsify/commit/7f270f9))
+
+
+
 <a name="4.2.7"></a>
 ## [4.2.7](https://github.com/QingWei-Li/docsify/compare/v4.2.4...v4.2.7) (2017-08-05)
 

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "docsify",
-  "version": "4.2.7",
+  "version": "4.2.8",
   "lockfileVersion": 1,
   "dependencies": {
     "abbrev": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "docsify",
-  "version": "4.2.7",
+  "version": "4.2.8",
   "description": "A magical documentation generator.",
   "author": {
     "name": "qingwei-li",