fix: add missing dependency

package.json

@@ -34,6 +34,7 @@
   },
   "devDependencies": {
     "eslint": "^4.18.2",
-    "eslint-config-sexy": "^3.2.1"
+    "eslint-config-sexy": "^3.2.1",
+    "generate-changelog": "^1.7.0"
   }
 }

yarn.lock

@@ -201,7 +201,7 @@ balanced-match@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
 
-bluebird@^3.5.1:
+bluebird@^3.0.6, bluebird@^3.5.1:
   version "3.5.1"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.1.tgz#d9551f9de98f1fcda1e683d17ee91a0602ee2eb9"
 
@@ -280,7 +280,7 @@ color-name@^1.1.1:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
 
-commander@^2.11.0:
+commander@^2.11.0, commander@^2.9.0:
   version "2.15.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.0.tgz#ad2a23a1c3b036e392469b8012cec6b33b4c1322"
 
@@ -670,6 +670,14 @@ functional-red-black-tree@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
 
+generate-changelog@^1.7.0:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/generate-changelog/-/generate-changelog-1.7.0.tgz#e6321226207d5cbcfe24de39d7ffd65d51698596"
+  dependencies:
+    bluebird "^3.0.6"
+    commander "^2.9.0"
+    github-url-from-git "^1.4.0"
+
 get-stream@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
@@ -683,6 +691,10 @@ github-api@^3.0.0:
     js-base64 "^2.1.9"
     utf8 "^2.1.1"
 
+github-url-from-git@^1.4.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/github-url-from-git/-/github-url-from-git-1.5.0.tgz#f985fedcc0a9aa579dc88d7aff068d55cc6251a0"
+
 glob@^7.0.3, glob@^7.0.5, glob@^7.1.2:
   version "7.1.2"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"