add |vcard-easy-struct|
use upstream
rely on struct for parsing arguments, then |let.| for binding
move some of the logic to the toplevel
fix that escaped tests

hm
add vcard-easy-struct.name-string, .openpgp-url-string
add X-OPENPGPFPR field, use it for targetting Monkeysign
shorten "VERSION" parameter of X-OPENPGPFPR to "V"
add show-time-in-timestamp? argument
disable time in my vcard