liburing-2.6 release

• Add getsockopt and setsockopt socket commands
• Add test cases to test/hardlink
• Man page fixes
• Add futex support, and test cases
• Add waitid support, and test cases
• Add read multishot, and test cases
• Add support for IORING_SETUP_NO_SQARRAY
• Use IORING_SETUP_NO_SQARRAY as the default
• Add support for IORING_OP_FIXED_FD_INSTALL
• Add io_uring_prep_fixed_fd_install() helper
• Support for napi busy polling
• Improve/add test cases
• Man page fixes
• Add sample 'proxy' example

• Add support for io_uring_prep_cmd_sock()
• Add support for application allocated ring memory, for placing rings
  in huge mem. Available through io_uring_queue_init_mem().
• Add support for registered ring fds
• Various documentation updates
• Various fixes

liburing-2.4 release

• Add io_uring_{major,minor,check}_version() functions.
• Add IO_URING_{MAJOR,MINOR,CHECK}_VERSION() macros.
• FFI support (for non-C/C++ languages integration).
• Add io_uring_prep_msg_ring_cqe_flags() function.
• Deprecate --nolibc configure option.
• CONFIG_NOLIBC is always enabled on x86-64, x86, and aarch64.
• Add support for IORING_REGISTER_USE_REGISTERED_RING and use if available.
• Add io_uring_close_ring_fd() function.
• Add io_uring_prep_msg_ring_fd_alloc function.
• Add io_uring_free_buf_ring() and io_uring_setup_buf_ring() functions.
• Ensure that io_uring_prep_accept_direct(), io_uring_prep_openat_direct(),
  io_uring_prep_openat2_direct(), io_uring_prep_msg_ring_fd(), and
  io_uring_prep_socket_direct() factor in being called with
  IORING_FILE_INDEX_ALLOC for allocating a direct descriptor.
• Add io_uring_prep_sendto() function.