Merge pull request FluxML#727 from hossein-pourbozorg/patch-1

add other optimizers to documentation

Merge pull request FluxML#694 from FluxML/tag_v5

Add Tracker to REQUIRE

Merge pull request FluxML#693 from FluxML/tag_v5

Update NNlib

Merge pull request FluxML#592 from MJ10/master

Layer normalisation for images

add hessian

conversions for dual numbers

Merge pull request FluxML#550 from KristofferC/kc/docs

modernize documentation

Merge pull request FluxML#469 from invenia/ed/hang-draw-and-quarter

Stop type treason with show of the TrackedArray type

Merge pull request FluxML#467 from invenia/ed/diagm-pair

Add new-style diagm to tracker

Omega and Turing fix