Yielding reads and inflate streams, proper Size reporting (hopefully!)
BSAFile now handles its own seeking to find the data block, hopefully alleviating some of the size headaches

BSAFile now supports yielding inflation / data reading
Yielding calls in BSAFile should now return as expected

BSAFile.OriginalSize is now a property, and shouldn't go empty or have inconsistent results

Added Extensions.SplitBuffer

Fixed TrimBuffer using the wrong length