* feat: make double tap to hold layer optional per key
* test: fix test serializer
* fix: remove "application start" text
* Add double-tap.svg
* Add closing dot at the end of the sentence.
* fead: add double-tap icon
* Bundle firmware version 8.3.0
* feat: 'layer-double-tap' feature flag
* feat: convert SwitchLayerMode to string enum
* add @angular/cli to the project
* increase nodejs version -> 8.2.1
* add lerna
* merge web and shared module
* move electron module into packages as uhk-agent
Electron agent functionality is not working
* delete symlinker
* convert private properties to public of component if used in html
* revert uhk-message.component
* fix component path
* fix the correct name of the uhk-message.component.scss
* building web and electron module
* delete uhk-renderer package
* handle device connect disconnect state
* add privilege detection
* fix set privilege functionality
* turn back download keymap functionality
* add bootstrap, select2 js and fix null pointer exception
* turn back upload data to keyboard
* fix send keymap
* fix test-serializer
* add missing package.json
* merging
* fix appveyor build
* fix linting
* turn back electron storage service
* commit the missing electron-datastorage-repository
* update node to 8.3.0 in .nvmrc and log node version in appveyor build
* set exact version number in appveyor build
* vertical align privilege and missing device components
* set back node version to 8 in appveyor
* move node-usb dependency from usb dir to root
maybe it is fix the appveyor build
* revert usb to root
* fix electron builder script
* fix electron builder script
* turn off electron devtools
* remove CTRL+U functionality
* fix CTRL+o
* fix lint error
* turnoff store freeze
* start process when got `Error: EPERM: operation not permitted` error
* move files from root usb dir -> packages/usb
