Add Linux aarch64 Wheel Built Support (#78)

Signed-off-by: odidev <[email protected]>

Author: odidev

.github/workflows/build_wheel.yml

@@ -9,21 +9,30 @@ env:
 
 jobs:
   build_wheels:
-    name: Build wheels on ${{ matrix.os }}
+    name: Build wheels on ${{matrix.arch}} for ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [ubuntu-20.04, windows-2019, macos-latest]
+        arch: [auto]
+        include:
+          - os: ubuntu-20.04
+            arch: aarch64
 
     steps:
       - uses: actions/checkout@v2
 
+      - name: Set up QEMU
+        if:  ${{ matrix.arch == 'aarch64' }}
+        uses: docker/setup-qemu-action@v1
+
       - name: Build wheels
         uses: joerick/[email protected]
         # to supply options, put them in 'env', like:
         env:
+          CIBW_ARCHS_LINUX: ${{matrix.arch}}
           CIBW_BEFORE_BUILD: pip install oldest-supported-numpy
 
       - uses: actions/upload-artifact@v2
         with:
-          path: ./wheelhouse/*.whl
+          path: ./wheelhouse/*.whl