Add release note item for new Monoid Const instance
Add release note item for new Monoid Const instance

See [6f3a194accd2a1a75a3f86c1b4dca30521488110/base]

Signed-off-by: Herbert Valerio Riedel <202fbcf3c00694524024feb79f3bb8fc1c4e4f9c@gnu.org>

elieux/ghc,lukexi/ghc-7.8-arm64,tibbe/ghc,hferreiro/replay,sgillespie/ghc,ryantm/ghc,tjakway/ghcjvm,siddhanathan/ghc,mettekou/ghc,GaloisInc/halvm-ghc,gridaphobe/ghc,vTurbine/ghc,sdiehl/ghc,nathyong/microghc-ghc,fmthoma/ghc,gridaphobe/ghc,forked-upstream-packages-for-ghcjs/ghc,siddhanathan/ghc,nathyong/microghc-ghc,fmthoma/ghc,gridaphobe/ghc,christiaanb/ghc,spacekitteh/smcghc,olsner/ghc,sgillespie/ghc,nathyong/microghc-ghc,wxwxwwxxx/ghc,gridaphobe/ghc,ghc-android/ghc,nkaretnikov/ghc,GaloisInc/halvm-ghc,wxwxwwxxx/ghc,tjakway/ghcjvm,forked-upstream-packages-for-ghcjs/ghc,elieux/ghc,TomMD/ghc,tibbe/ghc,nushio3/ghc,tjakway/ghcjvm,hferreiro/replay,fmthoma/ghc,urbanslug/ghc,TomMD/ghc,lukexi/ghc,nushio3/ghc,snoyberg/ghc,green-haskell/ghc,ghc-android/ghc,acowley/ghc,ezyang/ghc,vikraman/ghc,shlevy/ghc,ezyang/ghc,fmthoma/ghc,nathyong/microghc-ghc,sgillespie/ghc,frantisekfarka/ghc-dsi,jstolarek/ghc,ghc-android/ghc,fmthoma/ghc,oldmanmike/ghc,nathyong/microghc-ghc,vTurbine/ghc,gridaphobe/ghc,anton-dessiatov/ghc,mfine/ghc,spacekitteh/smcghc,elieux/ghc,snoyberg/ghc,acowley/ghc,acowley/ghc,olsner/ghc,holzensp/ghc,fmthoma/ghc,snoyberg/ghc,urbanslug/ghc,olsner/ghc,mettekou/ghc,tibbe/ghc,vTurbine/ghc,GaloisInc/halvm-ghc,nushio3/ghc,vikraman/ghc,olsner/ghc,shlevy/ghc,lukexi/ghc-7.8-arm64,green-haskell/ghc,holzensp/ghc,nathyong/microghc-ghc,da-x/ghc,AlexanderPankiv/ghc,forked-upstream-packages-for-ghcjs/ghc,sdiehl/ghc,vTurbine/ghc,ghc-android/ghc,siddhanathan/ghc,mettekou/ghc,sdiehl/ghc,gridaphobe/ghc,christiaanb/ghc,shlevy/ghc,tibbe/ghc,spacekitteh/smcghc,tibbe/ghc,jstolarek/ghc,lukexi/ghc-7.8-arm64,anton-dessiatov/ghc,jstolarek/ghc,vTurbine/ghc,snoyberg/ghc,ml9951/ghc,mettekou/ghc,nkaretnikov/ghc,vikraman/ghc,forked-upstream-packages-for-ghcjs/ghc,urbanslug/ghc,frantisekfarka/ghc-dsi,gcampax/ghc,GaloisInc/halvm-ghc,mettekou/ghc,tjakway/ghcjvm,acowley/ghc,holzensp/ghc,shlevy/ghc,olsner/ghc,christiaanb/ghc,bitemyapp/ghc,ghc-android/ghc,anton-dessiatov/ghc,hferreiro/replay,ml9951/ghc,ezyang/ghc,elieux/ghc,TomMD/ghc,wxwxwwxxx/ghc,sdiehl/ghc,frantisekfarka/ghc-dsi,olsner/ghc,nushio3/ghc,sgillespie/ghc,TomMD/ghc,sgillespie/ghc,vTurbine/ghc,bitemyapp/ghc,tjakway/ghcjvm,mcschroeder/ghc,oldmanmike/ghc,ezyang/ghc,nushio3/ghc,bitemyapp/ghc,GaloisInc/halvm-ghc,lukexi/ghc-7.8-arm64,sdiehl/ghc,hferreiro/replay,christiaanb/ghc,oldmanmike/ghc,hferreiro/replay,mfine/ghc,oldmanmike/ghc,da-x/ghc,forked-upstream-packages-for-ghcjs/ghc,mcschroeder/ghc,gcampax/ghc,lukexi/ghc,tjakway/ghcjvm,lukexi/ghc-7.8-arm64,frantisekfarka/ghc-dsi,nkaretnikov/ghc,gridaphobe/ghc,forked-upstream-packages-for-ghcjs/ghc,nkaretnikov/ghc,mfine/ghc,TomMD/ghc,jstolarek/ghc,gcampax/ghc,elieux/ghc,gcampax/ghc,nkaretnikov/ghc,spacekitteh/smcghc,tjakway/ghcjvm,mfine/ghc,ezyang/ghc,mfine/ghc,sdiehl/ghc,vikraman/ghc,da-x/ghc,sdiehl/ghc,vikraman/ghc,mfine/ghc,ezyang/ghc,green-haskell/ghc,elieux/ghc,vikraman/ghc,wxwxwwxxx/ghc,green-haskell/ghc,lukexi/ghc,AlexanderPankiv/ghc,oldmanmike/ghc,shlevy/ghc,da-x/ghc,da-x/ghc,nushio3/ghc,hferreiro/replay,AlexanderPankiv/ghc,fmthoma/ghc,siddhanathan/ghc,frantisekfarka/ghc-dsi,TomMD/ghc,shlevy/ghc,holzensp/ghc,ml9951/ghc,da-x/ghc,sgillespie/ghc,snoyberg/ghc,nushio3/ghc,anton-dessiatov/ghc,da-x/ghc,GaloisInc/halvm-ghc,wxwxwwxxx/ghc,lukexi/ghc,AlexanderPankiv/ghc,shlevy/ghc,christiaanb/ghc,siddhanathan/ghc,siddhanathan/ghc,urbanslug/ghc,mettekou/ghc,ryantm/ghc,elieux/ghc,snoyberg/ghc,mcschroeder/ghc,ml9951/ghc,bitemyapp/ghc,siddhanathan/ghc,gcampax/ghc,oldmanmike/ghc,acowley/ghc,sgillespie/ghc,mettekou/ghc,hferreiro/replay,nkaretnikov/ghc,holzensp/ghc,acowley/ghc,ml9951/ghc,olsner/ghc,mcschroeder/ghc,nkaretnikov/ghc,urbanslug/ghc,vikraman/ghc,christiaanb/ghc,acowley/ghc,ryantm/ghc,bitemyapp/ghc,mcschroeder/ghc,anton-dessiatov/ghc,ghc-android/ghc,oldmanmike/ghc,anton-dessiatov/ghc,christiaanb/ghc,vTurbine/ghc,lukexi/ghc,ryantm/ghc,green-haskell/ghc,anton-dessiatov/ghc,urbanslug/ghc,ml9951/ghc,snoyberg/ghc,AlexanderPankiv/ghc,gcampax/ghc,mfine/ghc,TomMD/ghc,mcschroeder/ghc,ryantm/ghc,ml9951/ghc,AlexanderPankiv/ghc,GaloisInc/halvm-ghc,wxwxwwxxx/ghc,ghc-android/ghc,mcschroeder/ghc,urbanslug/ghc,spacekitteh/smcghc,ezyang/ghc,jstolarek/ghc,forked-upstream-packages-for-ghcjs/ghc,ml9951/ghc,gcampax/ghc,AlexanderPankiv/ghc,nathyong/microghc-ghc,wxwxwwxxx/ghc