Group.children as dict

[starenka]

as every Group child needs to specify its name and Group returns a dict, it seems more convenient to specify children as dict rather than list, f.e:

Group(css='section#articles-list.block-articles', children={'url':Url(css='figure.headline-image a'), ]).parse(response.text)

instead of current

Group(css='section#articles-list.block-articles', children=[Url(name='url', css='figure.headline-image a'), ]).parse(response.text)

Thoughts?