enable CI

.github/workflows/continuous.yml

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+name: CI
+
+on: [ push, pull_request ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    strategy:
+      matrix:
+        smalltalk: [ Pharo64-9.0, Pharo64-10, Pharo64-11 ]
+    name: ${{ matrix.smalltalk }}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: hpi-swa/setup-smalltalkCI@v1
+        with:
+          smalltalk-image: ${{ matrix.smalltalk }}
+      - run: smalltalkci -s ${{ matrix.smalltalk }}
+        shell: bash
+        timeout-minutes: 15

.smalltalk.ston

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+SmalltalkCISpec {
+  #loading : [
+    SCIMetacelloLoadSpec {
+      #baseline : 'MathRandomNumbers',
+      #directory : 'src'
+    }
+  ],  
+  #testing : {
+    #coverage : {
+      #packages : [ 'Math-RandomNumbers*' ]
+    }
+}
+}