ENH: Add a 1D Savitzky-Golay filter
DOC: signal: fixed the last example in the docstring for savgol_coeffs
DOC: signal: fixed a typo in the savgol_filter docstring
DOC: signal: fix typo in _fit_edge docstring
BUG: signal: in savgol_filter, properly handle dtypes that are not 32 or 64 bit floating point
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
ENH: use partition for faster trim_mean

partition available in numpy 1.8 partially sorts array around the cut
positions. Scales linear instead of the linearithmic scaling of sort.
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
BUG: fix the 'lower' attribute of dpotri to make dpotrf/dpotri consistent.
Should close gh-2691

Also remove (deprecated) clapack dpotri/dpotrf functions.