Convert to composite action

action.yml

@@ -1,10 +1,14 @@
 name: 'Run Julia package tests'
 description: 'Run the tests in a Julia package'
 author: 'David Anthoff'
+
 inputs:
   inline:
     description: 'Value passed to the --inline flag. Options: yes | no. Default value: yes.'
     default: 'yes'
+
 runs:
-  using: 'node12'
-  main: 'lib/main.js'
+  using: 'composite'
+  steps:
+    - run: julia --color=yes --check-bounds=yes --inline=${{ inputs.inline }} --project -e 'using Pkg; Pkg.test(coverage=true)'
+      shell: bash