feat: add month-statistics && fix bug (#27)

* wip

* wip

* fix

* fix

* test

* test

* fix

* fix

* fix

* fix

* add

* opt

* update

* add changelog

* remove version

* fix

* a

* Update README.md

* a

* Update .umirc.dev.ts

package.json

@@ -1,6 +1,6 @@
 {
   "name": "issue-helper",
-  "version": "1.6.0",
+  "version": "1.7.0",
   "private": true,
   "description": "Some operations on issue.",
   "main": "src/main.js",
@@ -11,7 +11,8 @@
     "docs:deploy": "gh-pages -d docs-dist",
     "deploy": "npm run docs:build && npm run docs:deploy",
     "package": "ncc build src/main.js -o dist",
-    "update": "node ./script/update-user.js"
+    "update": "node ./script/update-user.js",
+    "main": "node ./src/main.js"
   },
   "author": "xrkffgg",
   "license": "MIT",