v1.3.14 - Fix Makefile Python headers detection

🔧 Makefile Build System Fix

This release fixes Python headers detection issues in cibuildwheel environment.

Changes

• 🔧 Fixed Python headers detection

  • Added fallback to sysconfig for Python headers and extension suffix when python-config fails
  • Removed duplicate Python headers from CXXFLAGS to prevent compilation conflicts
  • Fixed empty -I flag issue that was causing compilation errors

• 🐛 Enhanced debugging

  • Added verbose output for compilation commands to help diagnose issues
  • Added Python headers output to build logs
  • Added set -x for command tracing in pybind11 target

Technical Details

• Resolves compilation errors in cibuildwheel Linux environment
• Uses sysconfig as fallback when python-config command is not available or fails
• Ensures proper include paths for both local and CI builds

This release should compile successfully in all supported environments.