stop importing from init

.github/workflows/imports.yml

@@ -0,0 +1,20 @@
+---
+name: Imports
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Run Bash script
+      run: git grep 'from langchain import' | grep -vE 'from langchain import (__version__)'
+