chore: modernize ruff settings (#200)

Close #199.

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
Co-authored-by: Hans Dembinski <hans.dembinski@gmail.com>

ci fixes (#198)

[pre-commit.ci] pre-commit autoupdate (#191)

<!--pre-commit.ci start-->
updates:
- [github.com/astral-sh/ruff-pre-commit: v0.4.2 →
v0.4.3](astral-sh/ruff-pre-commit@v0.4.2...v0.4.3)
<!--pre-commit.ci end-->

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Hans Dembinski <HDembinski@users.noreply.github.com>

fix docs (#185)

Fixes missing entry for `bootstrap.covariance` in the docs and adds the
tag and probe example to the docs.

The changelog now points to Github for the more recent updates.

Switch to RTD theme and fix the unwieldly function signatures.

whitespace

whitespace

add covariance (#184)

Adds `bootstrap.covariance` in addition to `bootstrap.variance`. The
former computes the full covariance matrix if the function returns a
vector, while the latter computes the variance element-wise.

The docstring of `bootstrap.variance` was clarified with respect to this
point.

fix release and doc scripts

Move from readthedocs to github pages (#182)

And other CI fixes

clarify creator