relax type checks on Result
use custom matcher & DSL for temperature data fields
update spec matcher formats
update spec matcher style and rename
have_field matcher supports more field types
use Barometer::Matcher namespace
add Payload class for handling hashed responses from web services
change Data::Speed to Data::Vector
Data::DateTime uses DateTime class instead of Time
create XmlReader class to wrap XML->Hash conversion
split out weather_bug requests
split out weather_bug parsing
add rise/set setters to Data::Sun
expand DataTypes module for most types
Data::Temperature displays nothing when nil
allow temperature data field to accept multiple values
Payload treats NA as a nil value
matcher for temperature format allows negative values
use a simplified wunderground
use a simplified yahoo