* Add lerna & GB package-building script
* Move currency library to lerna module
* Update lerna config
* Add publish commands
* Add currency as an faux-external module
* Add separate command to build just core files
* Update dependency path
* Update build script to build all packages into `dist`
* Add packages to the jest test setup
* Move date library to packages
* Update imports to use @woocommerce/date
* Output wcSettings definition before any scripts are output
Fixes issues where wc-dates lib relies on settings object
* Add the build step into travis
* Update jest config to dynamically get package paths
* Update package postcss config to match wc-admin’s main config
* Add combined watch scripts for package+app, add a `clean` command to clean up old build files
* Ignore PHPCS error (leave todo message to fix)
* Concat files with a space, fix issue where all files join in one continuous string and fail the check
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