Log Message:
Import hs-time-w3c-0.1 as wip/hs-time-w3c.

This package provides functionalities to parse and format W3C Date and
Time. The package can also be used to convert it from/to
Data.Time.Calendar.Day and Data.Time.LocalTime.ZonedTime.

See: http://www.w3.org/TR/NOTE-datetime