dumpd - dead simple file drops

upload (from an allowed IP):
  curl https://dump.xodo.net -T file.tar.gz
  curl https://dump.xodo.net -F file=@file.tar.gz
  curl https://dump.xodo.net --data-binary @file.tar.gz

returns a download URL valid for 168h0m0s, rolling on every access.
max upload 10240 MB.