Org mode separates kvs not as initially assumed by whitespace (~ csv) but
rather at keywords (~ :\w+).
This is still not replicating Org mode behaviour though as I decided against
attributes ignoring multi-definitions. Instead we stack their
values (and those existing on the element) for certain attributes (class, style
for now).
e.g.
[[foo]]
would become <foo class="a"> in Org mode but becomes <foo class="a b"> with
go-org.
