* update explorer to use two X arrays

* update for backwards compatibility

* bug fix

* fix accidental recursion

* fix shape return

* more fixes to backwards compatibility

* black

* black

* update to use attr(0) for unit tests failing due to anonymous attr name

* refactor row array name

* make use for dictionary encoded obs array

* update query_obs_array

* update query_obs_array

* fix_typo

* black

* fix faulty except block

* remaster pbmc3k.cxg obs array

* remaster

* black

* black p2

* revert

* update docs

* revert

* update docs

* revise not mandatory

* add comment

* clearer arg

* remove param from docstring

* version update

* update arg usage to colwise

* add clause

* update tests with sparse data fixture

* black

* update tests

* update tests

* combine more tests with subtests

Co-authored-by: atarashansky <atarashansky@czimacos3990.lan>
Co-authored-by: atarashansky <atarashansky@CZIMACOS3990.hsd1.ma.comcast.net>
Co-authored-by: atarashansky <atarashansky@CZIMACOS3990.local>

* wip

* wip

* wip

* revert push_tests branch change

Co-authored-by: Mike Lin <mlin@CZIMACOS3726.hawaii.rr.com>
Co-authored-by: atarashansky <atarashansky@chanzuckerberg.com>

Co-authored-by: atarashansky <atarashansky@CZIMACOS3990.hsd1.ma.comcast.net>

* added unified navbar

* clean up

* updates

* remove Roboto declaration

* remove Embedding and Autosave

* remove home from dataset selector and move it to the bottom - add dropdown to help

* fix lint

* fix: SVG import

* upgrade node version

* add Roboto Condensed

* fix: add back code change dropped from resolving merge conflicts

* chore: update package-lock.json

* fix: ts lint

* update test

* update test

Co-authored-by: atarashansky <atarashansky@CZIMACOS3990.local>
Co-authored-by: Timmy Huang <thuang@chanzuckerberg.com>

Co-authored-by: atarashansky <atarashansky@CZIMACOS3990.hsd1.ma.comcast.net>

Co-authored-by: atarashansky <atarashansky@CZIMACOS3990.local>

* add server timing to dataset query and encode

* add server timing to dataset query and encode

* remove f strings

Co-authored-by: atarashansky <atarashansky@CZIMACOS3990.hsd1.ma.comcast.net>

Co-authored-by: atarashansky <atarashansky@CZIMACOS3990.local>

…for handling dict encoded arrays in the callback (#454)

Co-authored-by: atarashansky <atarashansky@CZIMACOS3990.hsd1.ma.comcast.net>