1.10.3 (2022-05-04)

This release fixes multiple input validation issues. These were found in the
'chafa' command-line tool and do not affect the library backend.

* Improved input validation in the XWD loader.

* Bug fixes:
  huntr.dev  Buffer over-read when compiled with -O0 or non-x86 target
             (reported by @JieyongMa).