Add traversal notebook (BFS + DFS)

.github/workflows/notebooks.yml

@@ -43,6 +43,9 @@ jobs:
     - name: Lint with precommit
       run: |
         pip install pre-commit
+        find content/ -name "*.md" -exec jupytext --to notebook {} \;
+        # pre-commit wants files to be staged
+        find content/ -name "*.ipynb" -exec git add {} \;
         pre-commit run --all-files --show-diff-on-failure --color always
 
     - name: Test with nbval

content/algorithms/index.md

@@ -13,4 +13,5 @@ flow/dinitz_alg
 lca/LCA
 euler/euler
 isomorphism/isomorphism
+traversal/index
 ```