Create Radio objects with DSL#create.
Create ListBox objects with DSL#create.
Create Stack and flow with DSL#create
Create Button objects with DSL#create.
Standardize on passing app as first element in the constructor, rather than in the options hash.
Standardize on passing app as first element in the constructor, rather than in the options hash : TextBlock
Standardize on passing app as first element in the constructor, rather than in the options hash : KeyPress
Merge branch 'dsl_create' of git://github.com/arnebrasseur/shoes4 into arne_dsl_create
Adjusted the spec to the new API with passing app in

- just a spec that made the PR of @plexus fail
- also slightly adjusted the keypress impl to make options optional :-)