Options.hs:SizeLimit:  add Semigroup instance (GHC 8.4 compat)
Options.hs:SizeLimit:  add Semigroup instance (GHC 8.4 compat)

jaspervdj/websockets,jaspervdj/websockets,jaspervdj/websockets,jaspervdj/websockets,jaspervdj/websockets