Add DDC to "Projects using Haskell"
Add DDC to "Projects using Haskell"

bitemyapp/commercialhaskell.com,chrisdone/hl,gbaz/hl,snoyberg/hl,josefs/hl,gbaz/hl,haskell-infra/hl,sergio0213/hl,erantapaa/hl,commercialhaskell/commercialhaskell.com,bitemyapp/commercialhaskell.com,kxxoling/hl,imalsogreg/hl,haskell-lang/haskell-lang,imalsogreg/hl,erantapaa/hl,sergio0213/hl,snoyberg/hl,gbaz/hl,kxxoling/hl,haskell-lang/haskell-lang,haskell-infra/hl,erantapaa/hl,snoyberg/hl,commercialhaskell/commercialhaskell.com,kxxoling/hl,bitemyapp/commercialhaskell.com,commercialhaskell/commercialhaskell.com,imalsogreg/hl,haskell-infra/hl,mietek/hl,chrisdone/hl,josefs/hl,haskell-lang/haskell-lang,josefs/hl