* get tests working and update copyright headers
* lint fix
* eslint ts update
* update CI to use NPM
* fix CI
* prettier
* npm, not yarn for docker
* remove unused package
* bump dockerfile to latest node LTS and no need for cache clean
* make frontend Dockerfile work and remove unused SUBSTRATE_TELEMETRY_SAMPLE
* remove final yarn references
* add another comment
* remove unused import
* remove more unused deps
* comment typo
* update npm packages
* update tsconfig
* remove babelrc, babel presets as well as stable package
* fix svg namespace tag syntax errors
* fix reference error due to namespace and class component having same name
* replace tslint with eslint
* make eslint happier
* update .nvmrc to 14
* update node version to 14 in gh workflow
* fix eslint warnings due to warnings treated as errors on CI (process.env.CI = true)
* pretty fix
* bump node version in Dockerfile
* use createRoot instead of react-dom render
* update browsers list in package.json
* More responsive React updates on scroll
* `Icon`s now use shadow dom
* Faster Sparkline
* Recycle table rows
* Separate Header from Chain to avoid vdom diffing
* Separate THead from Row.HEADER to avoid vdom diffing
* Throttle rendering updates on chain tabs, also styles
* Minor tweaks and fixes
* Created components for all columns
* Wrapping up Column refactor
* Rename Row--td to Column
* Lazy `Ago`
* Update styles for faster layouting
* Minor cleanup
* Fix Connection
* Use shadow DOM in `PolkadotIcon`
* Comments and tweaks for the List component
* Faster Tooltip and Truncate
* Minor tweaks
* Tooltiped columns can now be copied
* Future-proof Connection
* Remove the <div> wrapper from Icon
* Fix dash on missing graph data
* Clean up some SVGs
* Cleanup and comments
* Localize the use of `previousKeys` to `recalculateKeys`
* Custom appState disjoint from React component state
* Make appState and appUpdate refs readonly
* Cleanup
Afri