ENH: allow sparse __rmul__ to work with custom types
DOC: enhanced fftpack tutorial
DOC: further changes in fftpack tutorial
enhanced one example
Fixed issue #2720 in tutorial
adressed review comments, used [] throughout the document
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.
BUG: special: fix overflow at low order in eval_hermite

Hermite polynomials are very large and using the relationship to
the laguerre polynomials overflow earlier than necessary (around
N = 67 or so.)  Using the Clenshaw recursion we can evaluate to
much higher orders.

From now we evaluate the hermite polynomial as a stretched and
scaled normalized hermite (He) polynomial since He is slightly
smaller at any given order.
BUG: special: improve h_roots accuracy at high order

The roots of the hermite polynomials are still computed by using the
Golub-Welsch algorithm.  However a single pass of newton's method is
applied to improve the roots.  The symmetry of the Hermite roots
about zero is used as well.  The weights are calculated and then
rescaled to ensure that the integral of 1 is correct.

These changes were largely copied from the hermgauss implementation
in numpy (by Charles Harris).

Fixes #1991
ENH: re-run SmoothBivariateSpline on too low work memory failures
BUG: special: fix negative orders in lpmn
add derivatives to bivariate splines

These changes add a fortran routine to return derivatives at arbitrary
points and includes derivative evaluation for Bivariate splines. Keyword
'grid' is added to the Bivariate spline evaluation to remove the
necessity of the 'ev' method for arbitrary point evaluation. These
changes have been tested as working with the 0.12 branch.
updated to mater branch

merged the changes to the master branch as requested
fixed a few typos
*sigh* another typo
Merge pull request #2806 from ewmoore/hroot

BUG: special: eval_hermite overflows early and h_roots are inaccurate at high order

Fixes gh-1991
ENH qhull: raise a ValueError if masked array given as `points` argument

The `points` argument should contain the points coordinates. This has
no sense in the general case using masked array. In fact points could
not be partially defined, e.g. (X, --, Z) is not a point.

Moreover, the `points` array is always converted into a contiguous
array which does not contain the mask anymore. So, computations are
performed on the whole points set, even hidden points.
BUG: linalg: swap the logic in dpotri --- intent-c vs L/U

Also add some additional tests.
Merge pull request #2788 from EvgeniBurovski/dpotri__issue2691

BUG: linalg: fix the 'lower' attribute of dpotri to make dpotrf/dpotri consistent

Also remove (deprecated) clapack dpotri/dpotrf functions.

Fixes gh-2691