Update package compatibility for ExtendableSparse

Add CompatHelper.yml to workflows
   this will warn about breaking changes in package dependencies and
   automatically create pull requests

Author: j-fu

.github/workflows/CompatHelper.yml

@@ -0,0 +1,32 @@
+name: CompatHelper
+on:
+  schedule:
+    - cron: 0 0 * * *
+  workflow_dispatch:
+jobs:
+  CompatHelper:
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Add the General registry via Git"
+        run: |
+          import Pkg
+          ENV["JULIA_PKG_SERVER"] = ""
+          Pkg.Registry.add("General")
+        shell: julia --color=yes {0}
+      - name: "Install CompatHelper"
+        run: |
+          import Pkg
+          name = "CompatHelper"
+          uuid = "aa819f21-2bde-4658-8897-bab36330d9b7"
+          version = "3"
+          Pkg.add(; name, uuid, version)
+        shell: julia --color=yes {0}
+      - name: "Run CompatHelper"
+        run: |
+          import CompatHelper
+          CompatHelper.main()
+        shell: julia --color=yes {0}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          COMPATHELPER_PRIV: ${{ secrets.DOCUMENTER_KEY }}
+          # COMPATHELPER_PRIV: ${{ secrets.COMPATHELPER_PRIV }}

Project.toml

@@ -22,10 +22,10 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [compat]
 DiffResults = "^1.0.0"
-DocStringExtensions = "^0.8"
+DocStringExtensions = "^0.8,0.9"
 ExtendableGrids = "^0.9.12"
 Symbolics = "^4.6"
-ExtendableSparse = "0.6.6"
+ExtendableSparse = "0.6.6,0.7,0.8,0.9"
 ForwardDiff = "^0.10"
 GridVisualize = "^0.5"
 SparseDiffTools = "^1.19"