fix a crash in urlto
remove "prev url" and add info on history to the readme
page: needs seeking? write to a temp file
url: special case: "/"
pass all of the URLs torture tests
mime: handle image/*, application/pdf, audio/*
show previous url after each reponse
sysfatal on wait if plumbopen fails
fix absolute vs relative urls
put url in request() error
make sure to not add extra / to relative URLs
simpler /dev/text truncation
faster output, support basic plumbing
rewrite relative urls with abslute ones
a very basic client