update README

shellcheck

formatting

fix newline escaping and some other stuff

fix os name

shorten get_field function

make better arg parser

improve prompts

improve prompt

add version to OS detection

improve shell detection

revamp field getting and add editor support

add a role

update Makefile and README

cool warmup, now here is a POSIX ChatGPT client

remove call to tr

modify shebang

replace last echo with printf

fix space in input and format output better

remove versioning

who am I fooling? semantic versioning is insane for a project like this