diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4ac5673..84dca89 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,52 +8,9 @@ on: [pull_request, push]
 
 jobs:
   test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
-    - name: View context attributes
-      uses: actions/github-script@v6
+    - name: Run Build CI workflow
+      uses: adafruit/workflows-circuitpython-libs/build@main
       with:
-        script: console.log(JSON.stringify(context, null, 2))
-    - name: Translate Repo Name For Build Tools filename_prefix
-      id: repo-name
-      run: |
-        echo ::set-output name=repo-name::$(
-        echo ${{ github.repository }} |
-        awk -F '\/' '{ print tolower($2) }' |
-        tr '_' '-'
-        )
-    - name: Set up Python 3.x
-      uses: actions/setup-python@v1
-      with:
-        python-version: 3.x
-    - name: Versions
-      run: |
-        python3 --version
-    - name: Checkout Current Repo
-      uses: actions/checkout@v1
-      with:
-        submodules: true
-    - name: Checkout tools repo
-      uses: actions/checkout@v2
-      with:
-        repository: adafruit/actions-ci-circuitpython-libs
-        path: actions-ci
-    - name: Install dependencies
-      # (e.g. - apt-get: gettext, etc; pip: circuitpython-build-tools, requirements.txt; etc.)
-      run: |
-        source actions-ci/install.sh
-    - name: Library version
-      run: git describe --dirty --always --tags
-    - name: Perform build & test
-      run: |
-        ./build.sh
-    - name: Archive bundles
-      uses: actions/upload-artifact@v2
-      with:
-        name: bundles
-        path: ${{ github.workspace }}/bundles/
-    - name: Archive docs
-      uses: actions/upload-artifact@v2
-      with:
-        name: docs
-        path: ${{ github.workspace }}/_build/html
+        package-prefix: jepler_udecimal
diff --git a/.github/workflows/failure-help-text.yml b/.github/workflows/failure-help-text.yml
new file mode 100644
index 0000000..0b1194f
--- /dev/null
+++ b/.github/workflows/failure-help-text.yml
@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2021 Scott Shawcroft for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+name: Failure help text
+
+on:
+  workflow_run:
+    workflows: ["Build CI"]
+    types:
+      - completed
+
+jobs:
+  post-help:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'failure' && github.event.workflow_run.event == 'pull_request' }}
+    steps:
+    - name: Post comment to help
+      uses: adafruit/circuitpython-action-library-ci-failed@v1
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
deleted file mode 100644
index dab7c88..0000000
--- a/.github/workflows/release.yml
+++ /dev/null
@@ -1,85 +0,0 @@
-# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
-#
-# SPDX-License-Identifier: MIT
-
-name: Release Actions
-
-on:
-  release:
-    types: [published]
-
-jobs:
-  upload-release-assets:
-    runs-on: ubuntu-20.04
-    steps:
-    - name: Dump GitHub context
-      env:
-        GITHUB_CONTEXT: ${{ toJson(github) }}
-      run: echo "$GITHUB_CONTEXT"
-    - name: Translate Repo Name For Build Tools filename_prefix
-      id: repo-name
-      run: |
-        echo ::set-output name=repo-name::$(
-        echo ${{ github.repository }} |
-        awk -F '\/' '{ print tolower($2) }' |
-        tr '_' '-'
-        )
-    - name: Set up Python 3.7
-      uses: actions/setup-python@v1
-      with:
-        python-version: 3.7
-    - name: Versions
-      run: |
-        python3 --version
-    - name: Checkout Current Repo
-      uses: actions/checkout@v1
-      with:
-        submodules: true
-    - name: Checkout tools repo
-      uses: actions/checkout@v2
-      with:
-        repository: adafruit/actions-ci-circuitpython-libs
-        path: actions-ci
-    - name: Install deps
-      run: |
-        source actions-ci/install.sh
-    - name: Build assets
-      run: circuitpython-build-bundles --package_folder_prefix jepler --filename_prefix ${{ steps.repo-name.outputs.repo-name }} --library_location .
-    - name: Upload Release Assets
-      # the 'official' actions version does not yet support dynamically
-      # supplying asset names to upload. @csexton's version chosen based on
-      # discussion in the issue below, as its the simplest to implement and
-      # allows for selecting files with a pattern.
-      # https://github.com/actions/upload-release-asset/issues/4
-      #uses: actions/upload-release-asset@v1.0.1
-      uses: csexton/release-asset-action@master
-      with:
-        pattern: "bundles/*"
-        github-token: ${{ secrets.GITHUB_TOKEN }}
-
-  upload-pypi:
-    runs-on: ubuntu-20.04
-    steps:
-    - uses: actions/checkout@v1
-    - name: Check For setup.py
-      id: need-pypi
-      run: |
-        echo ::set-output name=setup-py::$( find . -wholename './setup.py' )
-    - name: Set up Python
-      if: contains(steps.need-pypi.outputs.setup-py, 'setup.py')
-      uses: actions/setup-python@v1
-      with:
-        python-version: '3.x'
-    - name: Install dependencies
-      if: contains(steps.need-pypi.outputs.setup-py, 'setup.py')
-      run: |
-        python -m pip install --upgrade pip
-        pip install setuptools wheel twine
-    - name: Build and publish
-      if: contains(steps.need-pypi.outputs.setup-py, 'setup.py')
-      env:
-        TWINE_USERNAME: __token__
-        TWINE_PASSWORD: ${{ secrets.pypi_token }}
-      run: |
-        python setup.py sdist
-        twine upload dist/*
diff --git a/.github/workflows/release_gh.yml b/.github/workflows/release_gh.yml
new file mode 100644
index 0000000..26d9703
--- /dev/null
+++ b/.github/workflows/release_gh.yml
@@ -0,0 +1,20 @@
+# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+name: GitHub Release Actions
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  upload-release-assets:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Run GitHub Release CI workflow
+      uses: adafruit/workflows-circuitpython-libs/release-gh@main
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        upload-url: ${{ github.event.release.upload_url }}
+        package-prefix: jepler_udecimal
diff --git a/.github/workflows/release_pypi.yml b/.github/workflows/release_pypi.yml
new file mode 100644
index 0000000..65775b7
--- /dev/null
+++ b/.github/workflows/release_pypi.yml
@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+name: PyPI Release Actions
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  upload-release-assets:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Run PyPI Release CI workflow
+      uses: adafruit/workflows-circuitpython-libs/release-pypi@main
+      with:
+        pypi-username: ${{ secrets.pypi_username }}
+        pypi-password: ${{ secrets.pypi_password }}
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
new file mode 100644
index 0000000..33c2a61
--- /dev/null
+++ b/.readthedocs.yaml
@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+build:
+  os: ubuntu-20.04
+  tools:
+    python: "3"
+
+python:
+  install:
+    - requirements: docs/requirements.txt
+    - requirements: requirements.txt
diff --git a/.readthedocs.yml b/.readthedocs.yml
deleted file mode 100644
index 338427a..0000000
--- a/.readthedocs.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
-#
-# SPDX-License-Identifier: Unlicense
-
-python:
-    version: 3
-requirements_file: docs/requirements.txt
diff --git a/requirements_dev.txt b/optional_requirements.txt
similarity index 100%
rename from requirements_dev.txt
rename to optional_requirements.txt