PROPOSAL: Export "readEither" from Text.Read

[Yitzchak Gale]

Iavor Diatchki wrote:
> readEither :: Read a => String -> Either String a
> ...defined in the module "Text.Read"
>  "readMaybe ::  Read a => String -> Maybe a".
> defined in terms of "readEither".

+1

Thanks,
Yitz