add multipart entity
imporve activity stream models
improve atom models
check whether key exists
improve data system add schema and transformer components
update oauth component
update openid component
update oauth2 component
update activity stream tests
update paypal component
use setBody
change scope from some methods
update data di
add missing handler property
change store interface namespace
check for request method and content type key
handle file stream body
add multipart stream
update oembed component
update pshb component