Release of bug fix version 0.7.5

I finally got around to releasing this bug fix version. What pushed me over the line were two bugs in the previous version, error in encoding of unsigned integer values (some of them above the 255 value) and invalid Pdu type being set in the Pdu.GetBulkPdu() static method.

You can download it from the SourceForge project page.

As always, let me know if you run into any problems or would like to see new functionality in the library.