diff --git a/.npmignore b/.npmignore
index bad048d..9e7d950 100644
--- a/.npmignore
+++ b/.npmignore
@@ -150,3 +150,7 @@ fabric.properties
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
+
+### Project
+!dist
+!lib
diff --git a/package.json b/package.json
index 3bc1230..3182ef2 100644
--- a/package.json
+++ b/package.json
@@ -22,9 +22,14 @@
     "test": "ava",
     "semantic-release": "semantic-release -e ./release.config.js",
     "travis-deploy-once": "travis-deploy-once",
-    "prerelease": "git diff-index --quiet HEAD -- && git checkout dev && git pull && yarn test && yarn run build",
-    "release": "git checkout master && git pull && git merge dev && git push",
-    "postrelease": "git checkout dev && git merge master && git push"
+    "clean-dist": "del dist && del lib",
+    "check-git": "git diff-index --quiet HEAD --",
+    "update-dev": "git checkout dev && git pull",
+    "merge-to-master": "git checkout master && git pull && git merge dev",
+    "master-to-dev": "git checkout dev && git merge master",
+    "prerelease": "yarn run check-git && yarn run clean-dist && yarn run update-dev && yarn test && yarn run build",
+    "release": "yarn run merge-to-master && git push",
+    "postrelease": "yarn run master-to-dev && git push"
   },
   "ava": {
     "babel": "inherit",
@@ -55,6 +60,7 @@
     "ava": "^0.24.0",
     "browser-env": "^3.2.4",
     "conventional-changelog-eslint": "^0.3.0",
+    "del-cli": "^1.1.0",
     "npm-run-all": "^4.1.2",
     "require-extension-hooks": "^0.3.2",
     "require-extension-hooks-babel": "^0.1.1",
diff --git a/yarn.lock b/yarn.lock
index 02959c3..a617ea8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1872,6 +1872,25 @@ define-properties@^1.1.2:
     foreach "^2.0.5"
     object-keys "^1.0.8"
 
+del-cli@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/del-cli/-/del-cli-1.1.0.tgz#27557d69a0b7df99dcbaa1e34a09e6ac6591d2c4"
+  dependencies:
+    del "^3.0.0"
+    meow "^3.6.0"
+    update-notifier "^2.1.0"
+
+del@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/del/-/del-3.0.0.tgz#53ecf699ffcbcb39637691ab13baf160819766e5"
+  dependencies:
+    globby "^6.1.0"
+    is-path-cwd "^1.0.0"
+    is-path-in-cwd "^1.0.0"
+    p-map "^1.1.1"
+    pify "^3.0.0"
+    rimraf "^2.2.8"
+
 delayed-stream@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
@@ -2477,7 +2496,7 @@ globals@^9.18.0:
   version "9.18.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
 
-globby@^6.0.0:
+globby@^6.0.0, globby@^6.1.0:
   version "6.1.0"
   resolved "https://registry.yarnpkg.com/globby/-/globby-6.1.0.tgz#f5a6d70e8395e21c858fb0489d64df02424d506c"
   dependencies:
@@ -2931,6 +2950,16 @@ is-observable@^1.0.0:
   dependencies:
     symbol-observable "^1.1.0"
 
+is-path-cwd@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-path-cwd/-/is-path-cwd-1.0.0.tgz#d225ec23132e89edd38fda767472e62e65f1106d"
+
+is-path-in-cwd@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-path-in-cwd/-/is-path-in-cwd-1.0.0.tgz#6477582b8214d602346094567003be8a9eac04dc"
+  dependencies:
+    is-path-inside "^1.0.0"
+
 is-path-inside@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-path-inside/-/is-path-inside-1.0.0.tgz#fc06e5a1683fbda13de667aff717bbc10a48f37f"
@@ -3434,7 +3463,7 @@ memorystream@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/memorystream/-/memorystream-0.3.1.tgz#86d7090b30ce455d63fbae12dda51a47ddcaf9b2"
 
-meow@^3.3.0, meow@^3.7.0:
+meow@^3.3.0, meow@^3.6.0, meow@^3.7.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
   dependencies:
@@ -3817,6 +3846,10 @@ p-locate@^2.0.0:
   dependencies:
     p-limit "^1.1.0"
 
+p-map@^1.1.1:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/p-map/-/p-map-1.2.0.tgz#e4e94f311eabbc8633a1e79908165fca26241b6b"
+
 p-reduce@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-reduce/-/p-reduce-1.0.0.tgz#18c2b0dd936a4690a529f8231f58a0fdb6a47dfa"
@@ -4532,6 +4565,12 @@ rimraf@2, rimraf@^2.5.1, rimraf@^2.6.1:
   dependencies:
     glob "^7.0.5"
 
+rimraf@^2.2.8:
+  version "2.6.2"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.2.tgz#2ed8150d24a16ea8651e6d6ef0f47c4158ce7a36"
+  dependencies:
+    glob "^7.0.5"
+
 rollup-plugin-commonjs@^8.2.6:
   version "8.2.6"
   resolved "https://registry.yarnpkg.com/rollup-plugin-commonjs/-/rollup-plugin-commonjs-8.2.6.tgz#27e5b9069ff94005bb01e01bb46a1e4873784677"
@@ -5196,7 +5235,7 @@ unzip-response@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/unzip-response/-/unzip-response-2.0.1.tgz#d2f0f737d16b0615e72a6935ed04214572d56f97"
 
-update-notifier@^2.3.0:
+update-notifier@^2.1.0, update-notifier@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/update-notifier/-/update-notifier-2.3.0.tgz#4e8827a6bb915140ab093559d7014e3ebb837451"
   dependencies: