flux to lux in bayes-nn (#462)

* flux to lux in bayes-nn

* fixed preview workflow (#463)

* testing preview workflow

* testing preview workflow 2

* testing preview workflow 3

* testing preview workflow 4

* testing preview workflow 5

* testing preview workflow 6

* testing preview workflow 6

* testing preview workflow 6

* new preview test

* new preview test 1

* final workflow

* final workflow

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Co-authored-by: Shravan Goswami <shravanngoswamii.com>

* made reviewed changes

* cleaned preview

* reversediff to tracker

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Co-authored-by: Shravan Goswami <shravanngoswamii.com>