build: turn on -Wundef

build: use cc.get_supported_arguments() to check for -W flags

build: drop grim_inc

build: always set HAVE_JPEG

This will allow us to turn on -Wundef.

Move man pages into doc/ directory

build: print feature summary

build: bump version to 1.4.1

Fail when more than one arguments are passed in

This makes it easier to catch mistakes.

main: add newline to end of error message

render: print error message when image alloc fails

man: update URL to sr.ht

ci: update clone URL to sr.ht

readme: move to sr.ht

readme: stop mentionning Sway

This was useful when the project was young, but now grim is the
de-facto tool for screenshots on wlroots-based compositors, so no
need to reference a specific compositor.

bash-completion: localize variables

write_jpg: fix printf format specifier

build: bump to version 1.4.0

build: stop using sh to invoke scdoc

build: bump to Meson 0.58.0

Cleanup deprecated usage. We'll need a newer Meson soon.

build: fix indentation and style