Pcap.Version - Clarify the exception statement to say that it is like…

…ly that

pcap isn't installed

Previously the statement first implied that the user might have an old pcap version
but that isn't nearly as likely as pcap not being installed.

Tag 4.2.0 for release

Update PacketDotNet with version 0.12.0

Tag 4.0.0 for release

Tag 4.0.0 rc1 for release

Tag 3.7.0 for release

Tag 3.6.0 for release

Tag 3.5.0 for release

Tag SharpPcap 3.4.0 for release

Tag 3.3.0 for release