Be Explicit, NUnrar 0.8

NUnrar 0.8

Lots of little fixes and some API changes:

Adding extras to API (IsMultipartVolume, IsSolidArchive, IsFirstVolume)
Made RarArchive.Entries and Volumes be lazy so work is only done when needed.
Added Mono target
Implemented RarOptions.GiveDirectoryEntries
CRC values for multi-volume archives should be correct
exceptions are thrown for Solid and Encrypted archives since NUnrar can’t extract them.
Added IRarExtractionListener interface for getting the progress of extraction. Archtecture doesn’t allow for real C# events.

Followed a lot of desires/fixes from users. I like users of my code.