Improve haddocks.
Improve haddocks.

beni55/aeson,bwo/aeson,plaprade/aeson,nurpax/aeson,neobrain/aeson,roelvandijk/aeson,23Skidoo/aeson,JPMoresmau/aeson,roelvandijk/aeson,dmjio/aeson,sol/aeson,aelve/json-x,lykahb/aeson,SeanRBurton/aeson,abbradar/aeson,timmytofu/aeson,neobrain/aeson,jkarni/aeson,sol/aeson,sol/aeson