Fix CHANGELOG.md after @ponylang-main bot went a bit haywire.
Fix CHANGELOG.md after @ponylang-main bot went a bit haywire.

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