Migrate from xcworkspace to swift package (#119)

* use swift package instead of xcworkspace

* use docc

* concurrency fixes

.github/workflows/docs.yml

@@ -0,0 +1,26 @@
+name: Docs
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  macos:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Generate documentation
+      run: |
+        swift package --allow-writing-to-directory docs generate-documentation \
+        --target BigInt \
+        --disable-indexing \
+        --output-path docs \
+        --transform-for-static-hosting
+    - name: Commit docs
+      run: |
+        git config --local user.email "bot@github.com"
+        git config --local user.name "GitHub Actions"
+        git add ./docs
+        git commit -m "Update docs"
+        git push origin HEAD:master

.github/workflows/swift.yml

@@ -4,44 +4,36 @@ on:
   push:
     branches: [ master ]
   pull_request:
-    branches: [ master ]
 
 jobs:
   macos:
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Build
       run: swift build --build-tests
     - name: Run tests
-      run: swift test
-  xcode:
-    runs-on: macos-latest
-    strategy:
-      matrix:
-        scheme: [BigInt-macOS, BigInt-iOS, BigInt-watchOS, BigInt-tvOS]
-    steps:
-      - uses: actions/checkout@v2
-      - name: Build
-        run: xcrun xcodebuild -workspace BigInt.xcworkspace -scheme ${{ matrix.scheme }}
+      run: swift test --parallel
+
   linux:
     container:
       image: swift:${{ matrix.linux }}
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        linux: [bionic, xenial, focal]
+        linux: [focal, jammy, noble]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Build
       run: swift build --build-tests --enable-test-discovery
     - name: Test
-      run: swift test --enable-test-discovery
-  codecov:
-    runs-on: macos-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Test and generate code coverage report
-      run: xcrun xcodebuild -workspace BigInt.xcworkspace -scheme BigInt-macOS test
-    - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v1
+      run: swift test --enable-test-discovery --parallel
+
+  # codecov:
+  #   runs-on: macos-latest
+  #   steps:
+  #   - uses: actions/checkout@v4
+  #   - name: Test and generate code coverage report
+  #     run: swift test --enable-code-coverage
+  #   - name: Upload coverage to Codecov
+  #     uses: codecov/codecov-action@v4