ENH: allow sparse __rmul__ to work with custom types
BUG: special: fix asymptotic expansion in rgamma
BUG: special: fix several issues in poch

Handle better the cases where the gamma functions in the definition hit
poles or over/underflow.

Fixes gh-1437
GEN: special: regenerate files
DOC: enhanced fftpack tutorial
DOC: further changes in fftpack tutorial
ENH sparse: Add Ellipsis indexing to sparse matrices.
TST sparse: Add tests Ellipsis indexing with sparse matrices.
enhanced one example
Fixed issue #2720 in tutorial
adressed review comments, used [] throughout the document
DOC: Add Notes section to chebwin docstring
ENH integrate: quadrature accepts non-tuple args argument

Copy quad behavior accepting a single element (integer) instead of the
expected tuple

Closes gh-2044
changing the doc strings of measurements.sum
correcting the measurements.sum() doc strings
ENH: expose control truncation of ndimage.gaussian_filter().

This change gives the user control over the size at which the Gaussian filter is truncated,
with default behavior to truncate at 4 standard deviations (the previous fixed value).
ENH: Pass extra keyword arguments to gaussian_laplace() and gaussian_gradient_magnitude() to gaussian_filter()

This change allows control over the truncation radius of the gaussian filter used in
gaussian_laplace() and gaussian_gradient_magnitude().
TST: ndimage: add more tests in test_gaussian_truncate()
ENH: re-run SmoothBivariateSpline on too low work memory failures
BUG: special: fix negative orders in lpmn