ddc-core: split WiCon into own module
ddc-core: merge NFData plate with annotated AST def
ddc-core: add simple version of the language AST
ddc-core: shift DaCon into Exp dir
Follow DaCon module move
ddc-core: more reorg of module structure
ddc-core: add Annotate transform to convert Simple -> Annot version of the AST