Add unreleased section to CHANGELOG post 0.11.2 release prep
Add unreleased section to CHANGELOG post 0.11.2 release prep

cquinn/ponyc,mkfifo/ponyc,boemmels/ponyc,CausalityLtd/ponyc,mkfifo/ponyc,boemmels/ponyc,mkfifo/ponyc,kulibali/ponyc,sgebbie/ponyc,ponylang/ponyc,boemmels/ponyc,cquinn/ponyc,dipinhora/ponyc,ponylang/ponyc,Perelandric/ponyc,Praetonus/ponyc,boemmels/ponyc,Perelandric/ponyc,cquinn/ponyc,cquinn/ponyc,sgebbie/ponyc,sgebbie/ponyc,kulibali/ponyc,Perelandric/ponyc,boemmels/ponyc,dipinhora/ponyc,sgebbie/ponyc,Perelandric/ponyc,Theodus/ponyc,kulibali/ponyc,mkfifo/ponyc,kulibali/ponyc,ponylang/ponyc,sgebbie/ponyc,Theodus/ponyc,jemc/ponyc,dipinhora/ponyc,jemc/ponyc,CausalityLtd/ponyc,Theodus/ponyc,mkfifo/ponyc,Perelandric/ponyc,Praetonus/ponyc,Praetonus/ponyc,Theodus/ponyc,Praetonus/ponyc,Theodus/ponyc,CausalityLtd/ponyc,jemc/ponyc