* Improve npm packaging

published npm packages now included commonjs and esm distributions.

Further work needs to be done to expose both commonjs and esm in all packages but the packages that need to run in both node and the browser either expose both or commonjs rather than esm.

* Updated CHANGELOG

* v7.20.2

* Removed apiVersion from APIMethods constructor
* Added static ApiVersion to the SDK objects
* Added README for sdk-rtl
* Set the lerna master package version to 7.20.0
* fixed build issues for unpublished package versions
* Updated TS SDK readmes with jest config requirements

* Bump @looker/components and styled-components to the latest

Consequently I also upgraded
 @testing-library/*
 jest-styled-components

 Also, marked @types/* as devDependencies in hack extension

* Replaced ActionList with DataTable in hackathon extension

This was required due to the @looker/components update.

'variant' is no longer a valid prop, replaced with 'color'

* Replaced ActionList with DataTable in API Explorer

* Replaced maxWidth with width and assigned a size ramp value to it

* Fixed broken DocMethodSummary tests

Added aria-label for both accessibility and testing purposes

* yarn.lock

* Removed jsx syntax error which somehow made it through the build

* New WhollySheet port to Typescript
* New Hackathon application looker extension
* New Google service account access token server

See packages/hackathon/README.md and packages/wholly-sheet/README.md for more information

Co-authored-by: Joseph Axisa, Bryn Ryans, Izzy Miller