* DEP: enforced radius in spherical voronoi

* changed test name

* fixed accidently added sphinxext

* fixed indentation

* [BUG] make p-values consistent with the literature

Co-authored-by: Matt Haberland <mhaberla@calpoly.edu>

…y#15778)

DEP: deal with deprecation of ndim >1 in bspline

* ENH: circvar calculated simply as 1-R

The circular statistic function circvar is updated to estimate circular
variance simply as one minus the mean resultant vector (1-R), instead
of using approximation to the linear variance. This definition is
compatible with the literature (e.g., Fisher, 1993; Jammalamadaka and
SenGupta, 2001) and other implementations in statistical packages (e.g.,
R and Matlab).

Optional boolean parameter ``normalize`` added
cirstd determines whether the returned values are independent on the
variable units, or whether the values are scaled by the range of
variable values (currently default not to break compatability).

Docstring of circvar, circstd and circmean have more accurate
description for the parameters ``high`` and ``low``.

Co-authored-by: Matt Haberland <mhaberla@calpoly.edu>

[skip actions] [skip circleci]

* Replace tabs with spaces.
* Remove form-feed characters.
* Use braces and indentation consistently in if-statements.
* Remove superfluous parentheses from return statements.
* Move the code labeled "under:" to the end of the function,
  so the one goto statement is a forward jump.

MAINT:special: Clean up C style in ndtr.c

MAINT: stats: adjust tolerance of failing TestTruncnorm

… axis is 0 (scipy#15824)

…py#15917)

[skip actions] [skip azp]