PyFFI does not like missing template attributes for Ref/Ptr despite the
documentation saying the attribute is optional.

Validation for "Skin" on BSTriShape is set only to NiObject for the time
being.  Setting it to BSSkin::Instance would require moving around the
blocks.

Correct data length in all cases, but not decoded.

Supports several edge cases at the cost of being more complicated since
the XML is not set up to allow testing of multiple flags in compounds.

Now loads SCOL with crashing NifSkope and without any errors.  The
PreCombined folder now at least opens but with errors as
BSPackedCombinedSharedGeomDataExtra is not decoded.

Much wider support of meshes overall, without any NaN issues stemming
from misassignment of half float types.

Very little actually changed, just the addition of 3 textures + env map
scale.

Not positive about the Scale but it seems likely.

Running XML Checker on 755 armors went from 75s to 9s.  There is
definitely a problem with ARG speed that needs to be fixed.

Removed outdated comment, added Fallout 4 to version nums.

Affects mostly particle/FX NIFs which can't really be edited anyway.

Add zero option to ExtraVectorsFlags to allow blender plugin to set the

value during export.

bhkBreakableConstraint update

1. Added PrismaticConstraint to list of available constraints in SubConstraint
2. Previously added enum "ConstraintType" renamed to "hkConstraintType"

Added structure of bhkBreakableConstraint. It seems that it is (and also bhkMalleableConstraint) some kind of "parent descriptor" for behavior for their "children" constraint which must be inserted within it. This inserted constraint in named "Sub Constraint", its type is determined by "Constraint Type" integer value. After this integer there is inserted complete constraint - one of allowed "common" constraints. And then there are inserted parameters specific for parent constrains (for example breakable one has "Threshold" and "Remove if Broken"). From vanilla nifs it seems that this "Sub Constraint" has always set its "Num Entities" to 2 but also both references to "Entities" are set to None. I think that this is probably because the relation between two rigid bodies this constraint is affecting is determined earlier - in "Entities" of parent constraint (bhkBreakableConstraint or bhkMalleableConstraint) and therefore it is not necessary (or it is forbidden?) to set references to entities also in "Sub Constraint".

bhkRagdollTemplate support

Added support for bhkRagdollTemplate block based on two .rdt files (.rdt file is a .nif file) located in Fallout3 directory "meshes/ragdollconstraint". It seems that game uses only file "Default.rdt". Second file "stiff.rdt" is unused and suspicious because in NiHeader it has User Version 2 set to 16 instead of 34 as all Fallout3 files (and also Default.rdt) have.
Can anybody check Fallout New Vegas files if there are present any .rdt files? It would be good to have more than 2 files for decoding. Or exists other games with these files?

NiSkinPartition unknowns removed

havok Materials and Layers update

Corrected order of materials in list of Skyrim materials to be sorted
ascending.

1. Added havok material definitions for Fallout 3. Only basic 31
materials defined. Function of other bits included in description.
2. Removed game prefix from havok material definitions.
3. Added havok layer definitions for Fallout 3.
Conflicts:
	nif.xml