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: 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.
Detect over-long compressed sequences, test mat file data integrity checks
MAINT: avoid an overflow in rice pdf
MAINT: change von Mises support to [-pi, pi]
TST: test generic _entropy vs distribution-specific implementations
BUG: fix _entropy for gumbel, logistic distributions.
TST: fix the _entropy tests (inheritance), silence the fp errors
TST: re-enable tests for the wald distribution
BUG: fix _entropy for the gamma distribution
MAINT: remove unnecessary comments
Revert "MAINT: change von Mises support to [-pi, pi]"

This reverts commit 024ce0b65b1e1c6c06a2345e13d317cbd5757b1f.
DOC: add a note to the vonmises docstring

Document the fact that von Mises distribution is not designed
to work as a fully-fledged distribution on a segment of a real line.
ENH: define a vonmises_line as proper distribution on [-pi, pi]

(yes, this undoes the previous commit, as discussed in the PR)
BUG: fix moments for invgamma

n-th moment only exists for n < a.
TST: mark the ncf normalization test as a knownfail