Call for features for GHC 8.4

Hello everyone, The release of GHC 8.4 is quickly approaching, with a release targetted for February 2018. To allow plenty of time for stabilization, we would like to cut the ghc-8.4 branch sometime in November. Currently there are relatively few items on the 8.4 status page [1]. If you have a feature which you would like to see in 8.4 but is not listed there please do add it soon. Also note that if things go according to plan, 8.6 will come a mere six months after 8.4 so if you have a large feature which won't make it for 8.4, do not fret; another release will be just around the corner. Cheers, - Ben [1] https://ghc.haskell.org/trac/ghc/wiki/Status/GHC-8.4.1