Julia v1.9 (#142)

Author: dlfivefifty

.github/workflows/ci.yml

@@ -11,7 +11,8 @@ jobs:
       matrix:
         version:
           - '1.7'
-          - '1'          
+          - '1'
+          - '^1.9.0-0'
         os:
           - ubuntu-latest
           - macOS-latest