diff --git a/.github/workflows/lint_python.yml b/.github/workflows/lint_python.yml
index 0351167b..33a3b75c 100644
--- a/.github/workflows/lint_python.yml
+++ b/.github/workflows/lint_python.yml
@@ -20,6 +20,7 @@ jobs:
       - run: flake8 . --count --exit-zero --max-complexity=66 --max-line-length=118
                       --show-source --statistics
       - run: isort --check-only --profile black . || true
+      - run: pip install setuptools
       - run: pip install --editable . || pip install .
       - run: mkdir --parents --verbose .mypy_cache
       - run: mypy --ignore-missing-imports --install-types --non-interactive . || true
diff --git a/.drone.yml b/.woodpecker.yaml
similarity index 64%
rename from .drone.yml
rename to .woodpecker.yaml
index 509bc2f0..3aca31ce 100644
--- a/.drone.yml
+++ b/.woodpecker.yaml
@@ -1,16 +1,18 @@
-pipeline:
-  restore-cache:
-    image: drillster/drone-volume-cache
-    restore: true
-    mount:
-      - ./cache-ci/pyusrb
-      - ./cache-ci/conda_packages
-      - ./cache-ci/pip_cache
-    volumes:
-      - /tmp/cache:/cache
-    ttl: 90  # liftetime in days
+when:
+  - event: [pull_request, tag, cron, push]
 
-  install:
+steps:
+
+  - name: restore-cache
+    image: bjodah/bjodahimg20dot:21.8.a
+    commands:
+      - curl ftp://chempy:$${ARTIFACTS_PASS}@$${FTP_SERVER}/cache/cache-ci.tar | tar x
+    secrets: [ ARTIFACTS_PASS, FTP_SERVER ]
+    when:
+     - event: push
+       repo: bjodah/chempy
+
+  - name: install
     image: bjodah/bjodahimg20dot:21.8.a
     environment:
       - CC=gcc-11
@@ -30,12 +32,11 @@ pipeline:
       - git fetch -tq
       - python3 setup.py sdist                    # test pip installable sdist (checks MANIFEST.in)
       - git archive -o dist/chempy-head.zip HEAD  # test pip installable zip (symlinks break)
-      - mkdir -p deploy/public_html/branches/${DRONE_BRANCH}
-      - cp dist/chempy-* deploy/public_html/branches/${DRONE_BRANCH}/
+      - mkdir -p deploy/public_html/branches/${CI_COMMIT_BRANCH}
+      - cp dist/chempy-* deploy/public_html/branches/${CI_COMMIT_BRANCH}/
 
-  test-suite:
+  - name: test-suite
     image: bjodah/bjodahimg20dot:21.8.a
-    group: testing
     environment:
       - CC=gcc-11
       - CXX=g++-11
@@ -52,19 +53,20 @@ pipeline:
       - bash -c '[[ $(python3 setup.py --version) =~ ^[0-9]+.* ]]'
       - ./scripts/run_tests.sh --cov chempy --cov-report html
       - ./scripts/coverage_badge.py htmlcov/ htmlcov/coverage.svg
-      - cp -r htmlcov/ deploy/public_html/branches/${DRONE_BRANCH}/
+      - cp -r htmlcov/ deploy/public_html/branches/${CI_COMMIT_BRANCH}/
       - ./.ci/grep-for-merge-blocking-token.sh
       - export CHEMPY_DEPRECATION_FILTER=ignore
       - python3 -m virtualenv /tmp/test_sdist
       - python3 -m virtualenv /tmp/test_git_archive
-      - cd deploy/public_html/branches/${DRONE_BRANCH}
+      - cd deploy/public_html/branches/${CI_COMMIT_BRANCH}
       - unset CHEMPY_SKIP_NO_TESTS  # I can't get pip to install extras when using local file...
       - bash -c "source /tmp/test_sdist/bin/activate; pip install --cache-dir $CACHE_ROOT/pip_cache file://$(realpath $(eval ls chempy-*.tar.gz))#chempy[all] pytest; pytest --pyargs chempy"
       - bash -c "source /tmp/test_git_archive/bin/activate; pip install --cache-dir $CACHE_ROOT/pip_cache file://$(realpath chempy-head.zip)#chempy[all] pytest; pytest --pyargs chempy"
+    depends_on:
+      - install
 
-  render-notebooks:
+  - name: render-notebooks
     image: bjodah/bjodahimg20dot:21.8.a
-    group: testing
     environment:
       - CHEMPY_DEPRECATION_FILTER=ignore
       - SUNDBASE=/opt/sundials-5.7.0-release
@@ -79,20 +81,11 @@ pipeline:
       - ./scripts/render_notebooks.sh
       - ./.ci/grep-for-binary-data.sh
       - mv index.html index.ipynb.html
-#      - (cd examples/; for f in bokeh_*.py; do python3 -m bokeh html $f; done)
-      - cp -r index.* examples/ "deploy/public_html/branches/${DRONE_BRANCH}"
-
-#  conda-recipe:
-#    image: bjodah/bjodahimg20dot:21.8.a
-#    group: testing
-#    commands:
-#      - export CONDA_PKGS_DIRS=$(pwd)/cache-ci/conda_packages
-#      - git fetch -tq
-#      - PATH=/opt/miniconda3/bin:$PATH conda config --add channels bjodah  # sym, pyodesys, pyneqsys
-#      - PATH=/opt/miniconda3/bin:$PATH conda build --output-folder "deploy/public_html/branches/${DRONE_BRANCH}" conda-recipe
-#      - (cd $CONDA_PKGS_DIRS; find . -maxdepth 1 -type d -not -path . -not -path .. | xargs rm -r)
+      - cp -r index.* examples/ "deploy/public_html/branches/${CI_COMMIT_BRANCH}"
+    depends_on:
+      - install
 
-  compile-documentation:
+  - name: compile-documentation
     image: bjodah/bjodahimg20dot:21.8.a
     environment:
       - CHEMPY_DEPRECATION_FILTER=ignore
@@ -104,26 +97,34 @@ pipeline:
       - export LD_LIBRARY_PATH=$SUNDBASE/lib
       - ./scripts/generate_docs.sh
       - cp LICENSE doc/_build/html/
-      - cp -r doc/_build/html/ deploy/public_html/branches/${DRONE_BRANCH}
+      - cp -r doc/_build/html/ deploy/public_html/branches/${CI_COMMIT_BRANCH}
+    depends_on:
+      - test-suite
+      - render-notebooks
 
-  rebuild-cache:
-    image: drillster/drone-volume-cache
-    rebuild: true
-    mount:
-#      - ./cache-ci/sund-3.2.1
-      - ./cache-ci/pyusrb
-      - ./cache-ci/conda_packages
-      - ./cache-ci/pip_cache
-    volumes:
-      - /tmp/cache:/cache
+  - name: rebuild-cache
+    image: bjodah/bjodahimg20dot:21.8.a
+    commands:
+      - find ./cache-ci/ -type f -mtime +90 -exec rm {} \;
+      - tar cf cache-ci.tar ./cache-ci/
+      - curl -T cache-ci.tar ftp://chempy:$${ARTIFACTS_PASS}@$${FTP_SERVER}/cache/
+    secrets: [ ARTIFACTS_PASS, FTP_SERVER ]
+    when:
+     - event: push
+       repo: bjodah/chempy
+    depends_on:
+      - compile-documentation
 
-  deploy:
-    image: drillster/drone-rsync
+  - name: deploy-public-html
+    image: bjodah/bjodahimg20dot:21.8.a
+    commands:
+      - tar czf chempy-${CI_COMMIT_BRANCH}.tar.gz ./deploy/public_html
+      - curl -T chempy-${CI_COMMIT_BRANCH}.tar.gz ftp://chempy:$${ARTIFACTS_PASS}@$${FTP_SERVER}/public_html/
+    secrets: [ ARTIFACTS_PASS, FTP_SERVER ]
     when:
-      event: [push]
-    hosts: [ "hera.physchem.kth.se" ]
-    port: 22
-    user: chempy
-    secrets: [ rsync_key ]  # secret only set fro event "push" not "pull_request"
-    source: ./deploy/public_html
-    target: ~/
+     - event: push
+       repo: bjodah/chempy
+    depends_on:
+      - compile-documentation
+
+
diff --git a/chempy/chemistry.py b/chempy/chemistry.py
index e225dc7f..4b310912 100644
--- a/chempy/chemistry.py
+++ b/chempy/chemistry.py
@@ -456,9 +456,8 @@ def _init_stoich(container):
         if isinstance(container, set):
             container = {k: 1 for k in container}
         container = container or {}
-        if (
-            type(container) == dict
-        ):  # we don't want isinstance here in case of OrderedDict
+        if type(container) == dict:  # noqa
+            # we don't want isinstance here in case of OrderedDict
             container = OrderedDict(sorted(container.items(), key=lambda kv: kv[0]))
         return container
 
@@ -1456,11 +1455,10 @@ def balance_stoichiometry(
         substances = OrderedDict(
             [(k, substance_factory(k)) for k in substances.split()]
         )
-    if (
-        type(reactants) == set
-    ):  # we don't want isinstance since it might be "OrderedSet"
+    if type(reactants) == set:  # noqa
+        # we don't want isinstance since it might be "OrderedSet"
         reactants = sorted(reactants)
-    if type(products) == set:
+    if type(products) == set:  # noqa
         products = sorted(products)
     subst_keys = list(reactants) + list(products)
 
diff --git a/examples/protein_binding_unfolding_4state_model.ipynb b/examples/protein_binding_unfolding_4state_model.ipynb
index f462fda6..edf8c003 100644
--- a/examples/protein_binding_unfolding_4state_model.ipynb
+++ b/examples/protein_binding_unfolding_4state_model.ipynb
@@ -209,7 +209,7 @@
    "source": [
     "Try hovering over the names to have them highlighted (this is particularly useful when working with large reaction sets).\n",
     "\n",
-    "We ca also generate tables representing the unimolecular reactions involing each substance, or the matrix showing the bimolecular reactions:"
+    "We ca also generate tables representing the unimolecular reactions involving each substance, or the matrix showing the bimolecular reactions:"
    ]
   },
   {