Added several NifStream functions and << operators to the built-in types.
The new xml_extract.cpp file now compiles.
Problem areas that must be fixed in the generation script were marked with !!BUG!!

Added optional version parameters to all NifStream functions.  Couldn't figure out why it conflicted with Amorilia's later change so I used my code.
 

Fixed ReadString function so that it can read strings with \0 characters in them.

* Support for all ten NiStringPalette offsets.
* There's still a problem with NiStringPalette: apparently the C++ string type does not allow null characters? ... Maybe we can try to find a workaround in the string reader function.

Block implementation is current with DocSys again.

Created classes for all new 20.0.0.4 blocks.
Re-implemented NiTexturingProperty as a data-style block.  Still needs an interface so is currently uncontrollable.

Renamed Color structure to Color4.

NiSkinPartition and NiLODNode are now read fully and can be examined by calling the asString function or written back out to a file unchanged.
NiTriStripsData has been given a public interface, ITriStripsData, so that the triangle strips it contains can be extracted.

Updated the WriteNifTree function to write the correct version string and hex number for the version requested.  Still doesn't support the new header layout.

Finished basic version support � still need to implement new block reading scheme for version 5 and up.
Updated all basic blocks with correctly versioned attributes from DocSys database.
Updated all data blocks except for NiSkinPartition and NiControllerSequence to react correctly to known version differences up to 10.1.0.0.
All blocks but the above now have both a Read and a Write function.