IsoReader.MaxReceiveSize: changed property setter from *protected* to…

… *public*.

fix copyright

Merge branch 'DadOfTheDead-patch-1'

Appveyor: download + install .net core 3.1

New version 4.2.0

Build script: upload symbol packages

AppVeyor configuration changed

New version 4.0.3

Bugfix release for #86

Merge branch 'pedromrpinto-master'

Newest paket.exe (in Magic-Mode)