Release v1.3.0

Changes

• BREAKING CHANGE: Replaced platform-specific shared memory implementation with slick-shm library
  • Removed all Windows-specific code (CreateFileMapping, MapViewOfFile, etc.)
  • Removed all POSIX-specific code (shm_open, mmap, etc.)
  • Unified shared memory implementation using slick::shm::shared_memory RAII wrapper
  • Code reduction: ~92 lines removed (14% reduction in queue.h)
  • Improved race condition handling: replaced sleep_for(1ms) with atomic creator flag
  • Added CREATOR_FLAG_OFFSET constant for atomic creator detection at offset 48 in header
  • Added comprehensive shared memory layout documentation
  • Simplified destructor using RAII automatic cleanup
  • All 22 tests pass (100% success rate)
  • No changes to public API - fully backward compatible at API level
  • Binary compatibility break: shared memory segments from previous versions are incompatible
• Fixed CMake configuration to properly handle slick-shm dependency in export targets
  • Removed SLICK_SHM_INSTALL OFF to allow slick-shm installation when fetched
  • Added find_dependency(slick-shm REQUIRED) in slick-queueConfig.cmake.in
  • Removed obsolete platform-specific precompiled headers (windows.h, sys/mman.h, etc.)