correct exporing of loose edges, obj spec defines faces as needing at least 3 verts (even though 2 vertex faces are in fact quite common).
now export these as lines.

Importing a PDB structure where the atoms are shown as mesh balls created an
error. This bug was fixed. 
 
Blendphys.

*changed default values for the folowing properties to be more useful in most scenes:
- radio_low_error_factor
- fake_caustics_power
- importance_value

Added additional check for None rig.

Fix in 'Merge Nodes' to prevent creating cyclic dependencies when nodes to be marged are linked between one another.

In 'Detach Outputs' invoke translate operator after all other operations. This gives same behavior as we have in 'Detach Node' operator

ngon. Now just let the make face operator try it instead of trying to decide
when to do this.

Material Utils: Added feature to set fake user (on/off) for materials as requested by meta-androcto. There are different modes: ACTIVE, SELECTED, SCENE (materials of objects), USED, UNUSED, ALL (materials).

1. Detach Outputs (Shift Alt D): Detaches Outputs leaving inputs linked.
2. Link to Output Node (O): Links active node to tree output node. Output node is 'Composite' node or 'Material Output', 'Lamo Output' or 'World Output'.

- Corrected a couple comma formatting issues.

Addons: Material Utils - Revised code, added descriptions, fixed error if material slot is empty, made Material Replace operator a popup and added feature to update selection based on affected objects. As the dropdown of prop_search may reach over the borders of the popup, 2.66.6 is required, as the entire popup was closing before this version (now the click is only handled by the dropdown list, see bug #35154).

In 'Swap Nodes' when swapping shaders - sockets' default value is passed when names of old and new nodes' sockets match

Added ExportSkinWeights to the condition for using an unrolled mesh enumerator.  For some very strange reason, it appears that DirectX will only transform a skinned vertex correctly for the first face that uses it.  All others will appear at the origin.  This can be worked around by using an unrolled mesh enumerator (in other words duplicating each vertex per face that uses it).  DirectX bug?

MHX importer: Support for rigify rig updated to be compatible with Rigify plugin for Blender 2.67 RC1.

In 'Merge Nodes' when first selected node is linked to anything - last added merging node will be linked to the same sockets. This gives possibility to kind of 'insert' merges into existing noodle.

Addon: Cosmectics for Simplify Curves - capital letters in sentences, compliant writing of "Blender Units", "Curves" and "F-Curves". Also improved speed for changing Bezier handle types (wasn't slow at all, but now it's around 100x faster)

Thanks to Sanc Tuary for the bug report! Bug #35040