diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
deleted file mode 100644
index 8bf2cd9..0000000
--- a/.github/workflows/build.yml
+++ /dev/null
@@ -1,258 +0,0 @@
-name: Build
-
-on:
-  push:
-  pull_request:
-
-env:
-  BUILDCACHE_VERSION: v0.27.0
-  BUILDCACHE_ACCURACY: STRICT
-  BUILDCACHE_MAX_CACHE_SIZE: 1073741824 # 1GiB
-
-jobs:
-  build-linux-x86_64:
-    name: Build Linux (GCC x86_64)
-    runs-on: ubuntu-20.04
-
-    env:
-      BUILDCACHE_DIR: ${{github.workspace}}/.buildcache
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-          submodules: recursive
-
-      - name: Install dependencies
-        run: |
-          sudo apt-get -y update
-          sudo apt-get -y install cmake ninja-build llvm-11-dev libclang-11-dev clang-11 zlib1g-dev
-
-          # setup buildcache
-          curl -LSfs https://github.com/mbitsnbites/buildcache/releases/download/$BUILDCACHE_VERSION/buildcache-linux.tar.gz | tar xz -C "$RUNNER_WORKSPACE"
-          echo "$RUNNER_WORKSPACE"/buildcache/bin >> $GITHUB_PATH
-
-      - name: Restore buildcache
-        uses: actions/cache@v2
-        with:
-          path: ${{env.BUILDCACHE_DIR}}
-          key: buildcache-ubuntu-20.04-x86_64
-
-      - name: Configure CMake
-        run: |
-          cmake -B build . -GNinja \
-            -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \
-            -DATDNA_DYNAMIC_LLVM=OFF \
-            -DClang_DIR:PATH=/usr/lib/cmake/clang-11 \
-            -DCMAKE_C_COMPILER_LAUNCHER:STRING=buildcache \
-            -DCMAKE_CXX_COMPILER_LAUNCHER:STRING=buildcache
-
-      - name: Build
-        run: cmake --build build --target package --verbose
-
-      - name: Print buildcache stats
-        run: buildcache -s
-
-      - name: Test
-        working-directory: build
-        run: ./atdna-test
-
-      - name: Upload artifacts
-        uses: actions/upload-artifact@v2
-        with:
-          name: atdna-linux-x86_64
-          path: |
-            build/athena-*.tar.gz
-
-  build-linux-aarch64:
-    name: Build Linux (GCC aarch64)
-    runs-on: ubuntu-20.04
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-          submodules: recursive
-
-      - uses: uraimo/run-on-arch-action@v2.0.9
-        name: Build & test
-        with:
-          arch: aarch64
-          distro: ubuntu20.04
-          githubToken: ${{github.token}}
-          dockerRunArgs: |
-            --volume "${PWD}:/workspace"
-          install: |
-            apt-get -y update
-            apt-get -y install build-essential cmake ninja-build llvm-11-dev libclang-11-dev clang-11 zlib1g-dev
-          run: |
-            cmake -B build . -GNinja \
-              -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \
-              -DATDNA_DYNAMIC_LLVM:BOOL=OFF \
-              -DClang_DIR:PATH=/usr/lib/cmake/clang-11
-            cmake --build build --target package --verbose
-            build/atdna-test
-
-      - name: Upload artifacts
-        uses: actions/upload-artifact@v2
-        with:
-          name: atdna-linux-aarch64
-          path: |
-            build/athena-*.tar.gz
-
-  build-macos-universal:
-    name: Build macOS (AppleClang universal)
-    runs-on: macos-10.15
-
-    env:
-      BUILDCACHE_DIR: ${{github.workspace}}/.buildcache
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-          submodules: recursive
-
-      - name: Install dependencies
-        run: |
-          brew update
-          brew install ninja
-
-          # universal clang+llvm from macports
-          curl -LSfs https://axiodl.com/files/clang-11-11.1.0_1.mpkg -o /tmp/clang-11-11.1.0_1.mpkg
-          sudo installer -pkg /tmp/clang-11-11.1.0_1.mpkg -target /
-
-          # setup buildcache
-          curl -LSfs https://github.com/mbitsnbites/buildcache/releases/download/$BUILDCACHE_VERSION/buildcache-macos.zip -o /tmp/buildcache-macos.zip
-          unzip /tmp/buildcache-macos.zip -d "$RUNNER_WORKSPACE"
-          echo "$RUNNER_WORKSPACE"/buildcache/bin >> $GITHUB_PATH
-
-      - name: Restore buildcache
-        uses: actions/cache@v2
-        with:
-          path: ${{env.BUILDCACHE_DIR}}
-          key: buildcache-macos-10.15
-
-      - name: Configure CMake
-        run: |
-          cmake -B build . -GNinja \
-            -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \
-            -DCMAKE_OSX_ARCHITECTURES:STRING="x86_64;arm64" \
-            -DLLVM_ROOT_DIR:PATH=/opt/local/libexec/llvm-11 \
-            -DCMAKE_C_COMPILER_LAUNCHER:STRING=buildcache \
-            -DCMAKE_CXX_COMPILER_LAUNCHER:STRING=buildcache
-
-      - name: Build
-        run: cmake --build build --target package --verbose
-
-      - name: Print buildcache stats
-        run: buildcache -s
-
-      - name: Test
-        working-directory: build
-        run: ./atdna-test
-
-      - name: Upload artifacts
-        uses: actions/upload-artifact@v2
-        with:
-          name: athena-macos-universal
-          path: |
-            build/athena-*.tar.gz
-
-  build-win32-amd64:
-    name: Build Windows (MSVC AMD64)
-    runs-on: windows-2019
-
-    env:
-      LLVM_VERSION: 11.1.0
-      BUILDCACHE_DIR: C:\buildcache
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-          submodules: recursive
-
-      - name: Install LLVM
-        run: |
-          $TempDir = "C:\temp" # C: has more space
-          $Filename = "vcpkg-llvm-$env:LLVM_VERSION-full.7z"
-          New-Item -Path "$TempDir" -ItemType Directory -ea 0
-          (New-Object Net.WebClient).DownloadFile("https://axiodl.com/files/$Filename", "$TempDir\$Filename")
-          7z x "-o$TempDir" -aos "$TempDir\$Filename"
-
-      - name: Install dependencies
-        run: |
-          choco install ninja
-
-          # set up buildcache
-          $TempDir = "$env:RUNNER_WORKSPACE\temp"
-          New-Item -Path "$TempDir" -ItemType Directory -ea 0
-          (New-Object Net.WebClient).DownloadFile("https://github.com/mbitsnbites/buildcache/releases/download/$env:BUILDCACHE_VERSION/buildcache-windows.zip", "$TempDir\buildcache.zip")
-          Expand-Archive -LiteralPath "$TempDir\buildcache.zip" -DestinationPath "$TempDir"
-          echo "$TempDir\buildcache\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
-
-      - name: Restore buildcache
-        uses: actions/cache@v2
-        with:
-          path: ${{env.BUILDCACHE_DIR}}
-          key: buildcache-windows-2019-msvc-amd64
-
-      - name: Enable Visual Studio environment
-        uses: ilammy/msvc-dev-cmd@v1
-
-      - name: Configure CMake
-        run: |
-          cmake -B build . -GNinja `
-            -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo `
-            -DCMAKE_MSVC_RUNTIME_LIBRARY:STRING=MultiThreaded `
-            -DCMAKE_TOOLCHAIN_FILE:PATH="C:\temp\vcpkg-llvm-$env:LLVM_VERSION\scripts\buildsystems\vcpkg.cmake" `
-            -DVCPKG_TARGET_TRIPLET:STRING=x64-windows-static
-
-      - name: Build
-        run: cmake --build build --target package --verbose
-
-      - name: Print buildcache stats
-        run: buildcache -s
-
-      - name: Test
-        working-directory: build
-        run: ./atdna-test.exe
-
-      - name: Upload artifacts
-        uses: actions/upload-artifact@v2
-        with:
-          name: athena-win32-amd64
-          path: |
-            build/athena-*.7z
-
-  release:
-    name: Release
-    runs-on: ubuntu-20.04
-
-    if:
-      contains('
-        refs/heads/master
-        refs/heads/test
-      ', github.ref)
-    needs:
-      - build-linux-x86_64
-      - build-linux-aarch64
-      - build-macos-universal
-      - build-win32-amd64
-
-    steps:
-      - name: Download artifacts
-        uses: actions/download-artifact@v2
-        with:
-          path: artifacts
-
-      - name: Create release
-        uses: marvinpinto/action-automatic-releases@latest
-        with:
-          repo_token: ${{github.token}}
-          automatic_release_tag: latest
-          prerelease: true
-          title: Development build
-          files: |
-            artifacts/*/*