Tags: dnkl/lsix

Add MacOS brew command and mark iTerm2 as reported working

Show webp images by default

Previously, lsix only showed webp if the filename was specified. Now,
webp files will be listed if no filenames are given on the command line.

Add yaft and iterm2 to the list of terminals

Detect non-sixel capable terminals and exit with an error

Uses the Send Device Attribute control sequence $'\e[c' to find what
features are supported. Feature "4" means SIXEL.

https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Sixel-Graphics

Added kludge for mlterm which can display SIXEL, but does not report

back the number of colors supported in the same way as xterm.
For now, just presuming max numcolors=1024.