[pre-commit] Add debug statements check and cleanup

.pre-commit-config.yaml

 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
 repos:
--   repo: https://github.com/ambv/black
+  - repo: https://github.com/ambv/black
     rev: stable
     hooks:
     - id: black
       language_version: python3.6
--   repo: https://github.com/pre-commit/pre-commit-hooks
+  - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v2.0.0
     hooks:
-    -   id: trailing-whitespace
-    -   id: end-of-file-fixer
-    -   id: check-yaml
-        exclude: meta.yaml
-    -   id: check-added-large-files
-    -   id: check-docstring-first
-    -   id: flake8
--   repo: https://github.com/PyCQA/bandit
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: debug-statements
+      - id: check-added-large-files
+      - id: check-docstring-first
+      - id: flake8
+      - id: check-yaml
+        exclude: conda/meta.yaml
+  - repo: https://github.com/PyCQA/bandit
     rev: 'master' # Update me!
     hooks:
-    - id: bandit
-      exclude: beat/editor/test
+      - id: bandit
+        exclude: beat/editor/test