Prepared changelog for 4.0.0-M1
Prepared changelog for 4.0.0-M1

scala-ide/docs,ar-android/docs,wpopielarski/docs,sschaef/docs,ar-android/docs,sschaef/docs,scala-ide/docs,scala-ide/docs,ar-android/docs,wpopielarski/docs,sschaef/docs,ar-android/docs,wpopielarski/docs