Implemented abstract prefixing for AwsS3
Implemented abstract prefixing for AwsS3

twistor/flysystem,mhlavac/flysystem,oswaldderiemaecker/flysystem,twistor/flysystem,farmisen/flysystem,dshafik/flysystem,dstockto/flysystem,Amrit01/flysystem,mhlavac/flysystem,sohelrana820/flysystem,mapyo/flysystem,barryvdh/flysystem,hannesvdvreken/flysystem,sachintaware/flysystem,nao-pon/flysystem,CarsonF/flysystem,rossriley/flysystem