deps: Update superstring to Pulsar's fork

.gitattributes

@@ -0,0 +1,2 @@
+# Normalize Unix-style line endings in fixture files
+/test/fixtures/*.txt	text eol=lf

.github/workflows/test.yml

@@ -7,18 +7,28 @@ on:
 
 jobs:
   test:
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, macos-latest, windows-latest ]
+        node-version: [ 16, 18 ]
+      fail-fast: false
     name: Test
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout the latest code
       uses: actions/checkout@v3
       with:
         fetch-depth: 0
         # Make sure we get all commits, since testing uses the local git info
+    - name: Install Python setuptools
+      # This is needed for Python 3.12+, since many versions of node-gyp
+      # are incompatible with Python 3.12+, which no-longer ships 'distutils'
+      # out of the box. 'setuptools' package provides 'distutils'.
+      run: python3 -m pip install setuptools
     - name: Setup Node
       uses: actions/setup-node@v3
       with:
-        node-version: 16
+        node-version: ${{ matrix.node-version }}
     - name: Install Dependencies
       run: npm install
     - name: Run Tests

package.json

@@ -27,7 +27,7 @@
   },
   "dependencies": {
     "dugite": "^2.1.0",
-    "superstring": "^2.4.4",
+    "superstring": "https://github.com/pulsar-edit/superstring#c2ff062317362363eae7d392cd78aef4fcc8b9f8",
     "what-the-diff": "^0.6.0"
   }
 }