added comment to gelsd
removed defunct function from Matrix classes
added closest_point to ParticleTree
Merge branch 'master' of github.com:otherlab/core
Merge branch 'master' of github.com:otherlab/core
Merge branch 'master' of github.com:otherlab/core
Work blas-free if USE_MKL is defined but OTHER_BLAS is not
from_python: Allow the various numpy ints to convert cleanly to bool
Merge branch 'master' of github.com:otherlab/core
exposed stuff to python
exposed closest point to python
exposed cylinder from/to pyton
don't complain about values of unknown types, just make them PyObject references
NdArray: Add stream operator
python/repr.h: Add repr for PyObjects
python/numpy: Explicitly disallow None -> numpy array conversion

PyArray_FromAny silently converts None to a singleton nan,
which is not cool.
python/wrap_constructor: Allow extra arguments when creating derived classes
PropManager: Various cleanups

1. Remove confusing default arguments to add.
2. Move more stuff to .cpp.
Prop: Make make_prop fall back to default for misunderstood arrays
value/convert.h: Simplify