Change the type signature from Text to Verkey
Change the type signature from Text to Verkey

Since the other type signatures of the typeclass has VerKey instead of
Text, it would be better to use VerKey here also to maintain
consistency. Also, IMO this signature is more easy to follow ( I had to
look at source to see how the verification key was generated. )

yesodweb/yesod,jprider63/yesod,s9gf4ult/yesod,jprider63/yesod,tolysz/yesod,s9gf4ult/yesod,tolysz/yesod,s9gf4ult/yesod,yesodweb/yesod,yesodweb/yesod,geraldus/yesod,psibi/yesod,psibi/yesod,jprider63/yesod,geraldus/yesod,psibi/yesod,geraldus/yesod,tolysz/yesod