* start separating iw plotting and array logic

* some more basics down

* comment

* collapse into just having a window function, no frame_function

* progress

* placeholder for computing histogram

* formatting

* remove spaghetti

* more progress

* basics working :D

* black

* most of the basics work in iw

* fix

* progress

* progress but still broken

* flippin display dims works

* camera scale must be positive for MIP rendering

* a very difficult to encounter iterator bug!

* patch iterator caveats

* mostly worksgit status

* add ArrayProtocol

* rename

* fixes

* set camera orthogonal to xy plane when going from 3d -> 2d

* naming, cleaning

* cleanup, correct way to push and pop dims

* quality of life improvements

* new histogram lut tool

* new hlut tool

* imagewidget rgb toggle works

* more progress

* support rgb(a) image volumes

* ImageGraphic cleanup

* cleanup, docs

* fix

* updates

* new per-data array properties work

* black formatting

* fixes and other things

* typing tweaks

* better iterator, fix bugs

* fixes

* show tooltips in right clck menu

* ignore nans and inf for histogram

* histogram of zeros

* docstrings

* fix imgui pixels

* iw indices event handlers only get a tuple of the indices

* bugfix

* fix cmap setter

* spatial_func better name

* bugfix

* hist specify quantile

* fix typos (#991)

* fix typos

* add rendercanvas to intersphinx_mapping

* nd-iw backup

* correct ImageGraphic w.r.t. ndw

* last fixes in ndi