First version 1.0 of xloop with the following features:

  - CMake build system to build and package kernel modules and programs
  - xloop kernel module to implement various file formats in the Linux kernel
  - read-only file format driver for QCOW2 file-format with support of:
      * sparse and preallocated QCOW2 disk images
      * different QCOW2 cluster sizes
      * decompression of zlib and zstd compressed clusters
      * QCOW2 extended lookup tables (extended_l2) for subclustering
      * partition scanning
  - user space utility xlosetup (based on losetup) to configure xloop devices
  - support of Linux kernel versions with blk-mq
  - fresh and clean repository with added README