Bump GitHub Actions versions and update changelog

Upgrade CI workflows: update actions versions in .github/workflows (checkout@v4→v6, setup-python@v5→v6, actions/cache@v4→v5, actions/upload-artifact@v4→v6) across macOS, Ubuntu and Windows runners. Remove the Windows "Set up Visual Studio environment" step (ilammy/msvc-dev-cmd@v1). Also add release entries to CHANGELOG.md for 15.0.1 (module init refactor, removed initialize_license alias) and 15.0.0 (license system and packaging notes).

Author: zpeng

.github/workflows/unit_test_macos.yml

@@ -122,7 +122,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ssh-key: ${{secrets.RADARSIMC}}
           submodules: recursive
@@ -133,12 +133,12 @@ jobs:
           xcode-version: ${{ matrix.xcode }}
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
 
       - name: Cache pip packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/Library/Caches/pip
           key: ${{ matrix.arch == 'arm64' && format('{0}-arm64-pip-{1}', runner.os, hashFiles('**/requirements-dev.txt')) || format('{0}-pip-{1}', runner.os, hashFiles('**/requirements-dev.txt')) }}
@@ -202,7 +202,7 @@ jobs:
 
       - name: Upload build logs
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: build-logs-python-${{ matrix.python-version }}-${{ matrix.arch }}
           path: build_logs/

.github/workflows/unit_test_ubuntu.yml

@@ -105,18 +105,18 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ssh-key: ${{secrets.RADARSIMC}}
           submodules: recursive
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
 
       - name: Cache pip packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements-dev.txt') }}
@@ -177,7 +177,7 @@ jobs:
 
       - name: Upload build logs
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: build-logs-python-${{ matrix.python-version }}-${{ matrix.os_label }}
           path: build_logs/

.github/workflows/unit_test_windows.yml

@@ -50,18 +50,18 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ssh-key: ${{secrets.RADARSIMC}}
           submodules: recursive
 
       - name: Set up Python ${{matrix.python-version}}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{matrix.python-version}}
 
       - name: Cache pip packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~\AppData\Local\pip\Cache
           key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements-dev.txt') }}
@@ -80,7 +80,7 @@ jobs:
           echo "${{ github.workspace }}\vcpkg" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
 
       - name: Cache vcpkg packages
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: vcpkg/installed
           key: ${{ runner.os }}-vcpkg-${{ hashFiles('**/vcpkg.json') }}-mbedtls
@@ -98,9 +98,6 @@ jobs:
         env:
           TEST_LICENSE_WINDOWS: ${{ secrets.TEST_LICENSE_WINDOWS }}
 
-      - name: Set up Visual Studio environment
-        uses: ilammy/msvc-dev-cmd@v1
-
       - name: Display system information
         run: |
           echo "Python version:"

CHANGELOG.md

@@ -4,6 +4,44 @@ All notable changes to this project will be documented in this file.
 
 ---
 
+## [15.0.1] - 2026-02-11
+
+### Changed
+
+- Refactored `__init__.py` to improve module initialization structure
+
+### Removed
+
+- `initialize_license` alias and optional gating from license module
+
+---
+
+## [15.0.0] - 2026-02-09
+
+### Added
+
+- License management system with mbedTLS integration
+- `set_license()` API for license configuration
+- Support for multiple license files
+- Automatic license initialization on module import
+- Packaging scripts for Windows and Linux/macOS platforms
+
+### Changed
+
+- Consolidated simulator imports from unified module
+- Simplified CI packaging by removing build tiers
+- Updated license API usage and free-tier checks
+- Enhanced build scripts for better library handling
+- Updated radarsimcpp submodule with licensing support
+
+### Removed
+
+- Ubuntu CUDA 12 GPU workflow from CI
+- Vehicle STL model files from repository
+- Build tier system
+
+---
+
 ## [14.2.0] - 2026-01-09
 
 ### Added