Add latest Julia v1.x CI job (#63)

Author: nickrobinson251

.github/workflows/CI.yml

@@ -12,7 +12,8 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.6'
+          - '1.6' # LTS
+          - '1'   # Latest
         os:
           - ubuntu-latest
         arch: