* [DLMED] add highlight features to README

* [DLMED] add temp images path to highlight features

* documentation updates

        - update readmet
        - update docs/ structure
        - merged highlights.md
        - update docs/Makefile commands

* [DLMED] update end-to-end process chart

* revise docstring for transforms/losses

* update docs

* update readthedocs

* 179 add DeleteKeys transform (#180)

* [DLMED] add DeleteKeys transform

* [DLMED] remove unnecessary copy

* update docs

* fixes github urls

* fixes sys.getsizeof test on mac

Co-authored-by: Nic Ma <nma@nvidia.com>