Pyffi

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* nif:

- bspline interpolator fix if no keys

- fixed bspline scale bug

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* cgf:

- more decoded of the mesh physics data chunk

* nif:

- scaling for constraints

- ported the A -> B spell from nifskope (see the new getTransformAB and
updateAB methods)

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* cgf:

- indices are unsigned shorts now (fixes geometry corruption on import of
large models)

- MeshChunk.setGeometry gives useful error message if number of vertices is
too large

* nif:

- nif.xml has minor updates in naming

- added NiBSplineData access functions (experimental, interface could still
change)

- started on support for compressed B-spline data

- fixed block order writing of bhkConstraints

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* tga: added missing xml file

* nif:

- removed some question marks so the fields can be accessed easily in python
interface

- ControllerLink and StringPalette functions and doctests

- quaternion functions in Matrix33 and Matrix44

- new bspline modules (still to implement later)

- fixed NiTransformInterpolator scaling bug

* cgf:

- use tempfile for write test

* quick install batch file for windows

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* qskope: make bitstructs editable

* cgf:

- MeshChunk functions to get vertex colors (game independent).

- Set vertex colors in setGeometry function.

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* cgf:

- fixed tangent space doctest

- setGeometry argument sanity checking

- setGeometry fix for empty material list

- setGeometry tangent space update fix if there are no uvs