Added string wrapping support to "io/output".

Split parcel "io/output/output" into message-, warning-, error-, and
header-specific parcels. Split parcel "00-declare/00-declare" into
alias-, function-, global-, and parcel-specific parcels. Concocted the
abstraction of "parcels," serving as documentation-specific aggregations
of related aliases, functions, and globals. As ever, a host of numerous
regression corrections abound.