50 files changed, 1895 insertions, 879 deletions

diff --git a/.github/PULL_REQUEST_TEMPLATE/pull_request_template.md b/.github/PULL_REQUEST_TEMPLATE/pull_request_template.md
new file mode 100644
index 0000000..7c48653
--- /dev/null
+++ b/.github/PULL_REQUEST_TEMPLATE/pull_request_template.md
@@ -0,0 +1,20 @@
+---
+name: Generic pull request
+about: Create a pull request to propose some changes.
+title: ''
+labels: ''
+assignees: ''
+---
+
+### What changed
+
+
+### Why the changes
+
+
+### Before-merge checklist
+
+- [ ] Changes are tested.
+- [ ] Documentation is up to date with the changes.
+- [ ] Commit history is clean and descriptive.
+
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f5ca509..7387fe7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,8 +5,8 @@ jobs:
   build-viewer:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
           # Latest version officially tested for Ld
           node-version: 16.14.2
@@ -16,7 +16,7 @@ jobs:
           yarn
           yarn run lint
           yarn run build
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           name: viewer-dist
           path: viewer/dist
@@ -30,14 +30,14 @@ jobs:
         os: [ ubuntu-20.04, windows-2019 ]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/cache@v2
+      - uses: actions/checkout@v3
+      - uses: actions/cache@v3
         with:
           path: ~/.stack
           key: compiler-${{ runner.os }}-${{ hashFiles('compiler/stack.yaml') }}
-      - uses: haskell/actions/setup@v1
+      - uses: haskell/actions/setup@v2
         with:
-          ghc-version: 8.10.4
+          ghc-version: 9.2.4
           enable-stack: true
       - name: Build Haskell Stack project
         working-directory: compiler
@@ -49,7 +49,7 @@ jobs:
             --flag ldgallery-compiler:portable \
             --copy-bins \
             --local-bin-path dist
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           name: compiler-dist-${{ matrix.os }}
           path: compiler/dist
@@ -60,14 +60,14 @@ jobs:
     needs: [ build-viewer, build-compiler ]
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Bundle ldgallery viewer
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v3
         with:
           name: viewer-dist
           path: dist/viewer
       - name: Bundle ldgallery compiler
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v3
         with:
           name: compiler-dist-ubuntu-20.04
           path: dist
@@ -82,7 +82,7 @@ jobs:
           pandoc --standalone --to man viewer/ldgallery-viewer.7.md --output dist/ldgallery-viewer.7
           cp changelog.md dist/
           cp license.md dist/
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           name: archive-linux-amd64
           path: dist
@@ -91,18 +91,18 @@ jobs:
     needs: [ build-viewer, build-compiler ]
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/cache@v2
+      - uses: actions/checkout@v3
+      - uses: actions/cache@v3
         with:
           path: ~/downloads
           key: archive-windows-vendored
       - name: Bundle ldgallery viewer
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v3
         with:
           name: viewer-dist
           path: dist/viewer
       - name: Bundle ldgallery compiler
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v3
         with:
           name: compiler-dist-windows-2019
           path: dist
@@ -135,7 +135,7 @@ jobs:
           7z e ~/downloads/"$MAGICK_LATEST" -so LICENSE.txt > dist/magick.license.txt
           7z e ~/downloads/"$MAGICK_LATEST" -so NOTICE.txt > dist/magick.notice.txt