Add Julia pre in ci (#323)

Author: blegat

.github/workflows/ci.yml

@@ -26,6 +26,9 @@ jobs:
           - version: '1'
             os: ubuntu-latest
             arch: x86
+          - version: 'pre'
+            os: ubuntu-latest
+            arch: x64
           - version: 'nightly'
             os: ubuntu-latest
             arch: x64