Fixed clean script

package.json

@@ -13,7 +13,7 @@
     "build": "tsc && npm run rollup && npm run terser",
     "rollup": "rollup --input ./lib/index.js --file ./lib/index-cjs.js --format cjs --plugin @rollup/plugin-node-resolve",
     "terser": "for file in $(find ./lib -name '*.js'); do terser --compress --mangle --output $file -- $file; done || exit 1",
-    "clean": "rimraf ./lib",
+    "clean": "rimraf ./lib ./docs",
     "test": "jest --detectOpenHandles",
     "docs": "typedoc ./src/main/index.ts",
     "publish-docs": "[ -d ./docs ] && [[ ! $(git status --porcelain) ]] && branch=$(git rev-parse --abbrev-ref HEAD) && sha=$(git rev-parse --short HEAD) && t=$(mktemp -d) && cp -R ./docs/ $t && git checkout ghpages && ls -A | grep -wv .git | xargs rm -rf && cp -R $t/ . && git add . && git commit -m \"Updated docs ($sha)\" && git push && git checkout $branch",