BUG: stub out spurious methods of Akima1DIntgerpolator

from_spline and from_bernstein_basis are inherited
from PPoly, and neither produces an Akima interpolator.
DOC: add See Also sections to Pchip and Akima interpolators
TST: sparse: add regression test for sparse matrix typemaps
BUG: sparse: fix omitted types in sparsetools typemaps

Fixes gh-3780
Merge pull request #3744 from ev-br/akima_stub

stub out inherited methods of Akima1DInterpolator
Merge pull request #3781 from pv/fix-sparse-typemaps

BUG: sparse: fix omitted types in sparsetools typemaps
MAINT: update copyright notice to 2014.
MAINT: fix reST errors in integrate.quad docstring.
BUG: fix issue in scipy.special tutorial example.  Closes gh-3784.

Thanks to @CraigVD for reporting and suggestion a fix.

[ci skip]
TYPO: sheroidal -> spheroidal

Spotted this misspelling in the online docs
Merge pull request #3796 from chatcannon/doc_typo

TYPO: sheroidal -> spheroidal
Merge pull request #3791 from rgommers/doc-maint

Some maintenance for doc builds