Test on pre-release instead of nightly and run CI on min and lts (#37)

* Test on pre-release instead of nightly

* Version of setup

* Change continue-on-error condition for CI job

* Update CI matrix to include 'min' and 'lts' versions

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Co-authored-by: David Müller-Widmann <[email protected]>

Author: gdalle

.github/workflows/ci.yml

@@ -11,14 +11,15 @@ jobs:
   test:
     name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
     runs-on: ${{ matrix.os }}
-    continue-on-error: ${{ matrix.version == 'nightly' }}
+    continue-on-error: ${{ matrix.version == 'pre' }}
     strategy:
       fail-fast: false
       matrix:
         version:
-          - '1.6'
+          - 'min'
+          - 'lts'
           - '1'
-          - 'nightly'
+          - 'pre'
         os:
           - ubuntu-latest
         arch: