closes #283

'temp' is too short a parameter name, especially for an API,
and could be confused with 'temporary'.

Closes #263.

Also fixup some docstrings for better formatting.

This avoids "sparse efficiency" warnings.

This has a lower chance to give an impression that the substitution
happens in-place.

Closes gitlab issue #237

Christoph Groth authored 6 years ago and Joseph Weston committed 6 years ago

and without default values.

Co-authored-by: Joseph Weston <joseph@weston.cloud>

So it's no longer necessary to provide the REFNAME environment variable.
Also the link template string format is now more general to support at
least gitlab github and cgit.

'box-forced' is deprecated as of matplotlib 2.2.

Previously 'plotter.density' was not as well factored as
'plotter.current', which made it hard to compose, e.g. for
passing custom parameters to 'plotter.interpolate_density'.

Also add reference documentation for 'density'.

Thanks to Alexandre Bernard for reporting this.
https://mailman-mail5.webfaction.com/pipermail/kwant-devel/2018-May/000088.html