BF: remove unneeded VoxelPosition class that used the Python>=2.7 functools.total_ordering module - causing an error when using Python 2.6
Merge pull request #169 from nno/_bf/total_ordering_py2.6

BF: remove unneeded VoxelPosition class from surfing.volsurf
Update rfe.py

Emphasizing that RFE needs at least 3 chunks to work.
Update rfe.py

Corrected RFE and SplitClassifier with 3 chunks for cross validation.
Update rfe.py

Typo!
Update rfe.py

Unnecessary space removed
Update rfe.py

reducing line length
Merge pull request #171 from armaneshaghi/master

Update rfe.py - add note that RFE needs >=3 chunks for cross-validation.
RF: consistent use of euclidean (no euclidian)
Merge pull request #172 from yarikoptic/master

RF: consistent use of euclidean (no euclidian)
NF: SurfaceQueryEngine, intended to find surface Dataset features that are within a particular (Euclidean or dijkstra) distance from a center node
ENH+RF: make fa_key an argument (rather than use "node_indices"), plus some minor refactorings as suggested by @yarikoptic
ENH: let __str__ and __repr__ show the new fa_node_key value
Merge pull request #173 from nno/_tent/surfqe

NF: SurfaceQueryEngine; identify feature indices in neighborhood for surface dataset
BF: Revitalize the news widget