update Interpolations compat; add compat helper

Author: aelligp

.github/workflows/CompatHelper.yml

@@ -0,0 +1,16 @@
+name: CompatHelper
+on:
+  schedule:
+    - cron: '00 00 * * *'
+  workflow_dispatch:
+jobs:
+  CompatHelper:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Pkg.add("CompatHelper")
+        run: julia -e 'using Pkg; Pkg.add("CompatHelper")'
+      - name: CompatHelper.main()
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          COMPATHELPER_PRIV: ${{ secrets.DOCUMENTER_KEY }}  # optional
+        run: julia -e 'using CompatHelper; CompatHelper.main(; subdirs=["", "test"])' # subdirs can be omitted if not needed

Project.toml

@@ -58,7 +58,7 @@ Glob = "1.2 - 1.3"
 GMT = "1"
 GridapGmsh = "0.5 - 0.7"
 ImageIO = "0.1 - 0.6"
-Interpolations = "0.14, 0.15"
+Interpolations = "0.14, 0.15, 0.16"
 JLD2 = "0.4, 0.5"
 LightXML = "0.8, 0.9"
 MeshIO = "0.1 - 0.5"