Release 1.0.51

[LTRData]

This release contains several bugfixes, for example:

• UdfPartition.TypeAsString now reports "UDF".
• CDBuilder now correctly assigns unique shortened names to each added file.
• CDReader.ActiveVariant now reports Iso9660Variant.Joliet when Joliet is in use.
• Corrected a mistake in LZX decompression code that caused some WIM images to fail.
• DirectoryNotFoundException is now thrown when WIM file name pattern-based searches start in a non-existing directory. Previously, NullReferenceException was thrown.

Also, serveral minor optimizations in various places. Switched to using implemented types instead of base types to avoid unnecessary method binding lookups and similar. Iso9660 library now avoids several temporary string allocations, particularly in CDBuilder.

Big thanks to @zipgenius and @cathoderaydude for reporting issues!