Using `auto` seems to create a different output on different platforms.
Notably it was observed that aarch64 compiles return a different
value.
Fix the type of the characters iterated through the string.
Fixes#639
Signed-off-by: Henner Zeller <h.zeller@acm.org>
width and height were being set using the incorrect axes resulting in incorrect canvas dimensions
Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
