vue-storefront

Merge branch 'develop' into 2854-i18n-named-formatting

* develop: (21 commits)
  changelog updated
  changelog updated
  add-to-car-fixed
  Small docs improvement
  featurer: output compression + html minifier
  Updated changelog #3456
  productId should support number as well as string https://vuejs.org/v2/guide/components-props.html#Prop-Validation Followed as described for Multiple possible types
  Improved: changes number to number | string It should support numeric as well string values
  Fixed: issue changing item_id to  string | number [tsl] ERROR in /vue-storefront/vue-storefront/core/modules/cart/helpers/productsEquals.ts(16,3)       TS2322: Type 'string | number' is not assignable to type 'number'.   Type 'string' is not assignable to type 'number'.
  Improved: id values should be either number or string. Changing type to any removes types.
  Changed productId type to null so that it supports numeric as well as string values https://vuejs.org/v2/guide/components-props.html#Prop-Validation
  Added tracing support
  Improved: changed type of all the id values to any instead of number VSF should be flexible to support id values to be numeric as well as alphanumeric It may be possible that the ecommerce ERP, it is integrated with may have support for alphanumeric identifier.
  Fixed test
  updated CHANGELOG.md
  Added an mock when you want to overwrite the api search implementation
  Created src/search/adapter as we need to have the folder
  Removed the loading of global as it is not working so easy.
  Added logging for debugging it while developing
  Changed order if imports for search adapter
  ...