Add 32-bit architectures and all OSes

Author: ViralBShah

.github/workflows/CI.yml

@@ -22,8 +22,11 @@ jobs:
           - '1.8'
         os:
           - ubuntu-latest
+          - macos-latest
+          - windows-latest
         arch:
           - x64
+          - x86
     steps:
       - uses: actions/checkout@v3
       - uses: julia-actions/setup-julia@v1