rubygem-webpacker-4.2.2-bp154.1.20

- updated to version 4.2.2
  see installed CHANGELOG.md
  [#]# [[4.2.2]](https://github.com/rails/webpacker/compare/v4.2.1...v4.2.2) - 2019-12-09
  - Fixed issue with webpack clean task for nested assets [#2391](https://github.com/rails/webpacker/pull/2391)
  [#]# [[4.2.1]](https://github.com/rails/webpacker/compare/v4.2.0...v4.2.1) - 2019-12-09
  - Fixed issue with webpack clean task [#2389](https://github.com/rails/webpacker/pull/2389)

- updated to version 4.2.0
  [#]# [[4.2.0]](https://github.com/rails/webpacker/compare/v4.1.0...v4.2.0) - 2019-11-12
  - Fixed installer bug [#2366](https://github.com/rails/webpacker/pull/2366)
  [#]# [[4.1.0]](https://github.com/rails/webpacker/compare/v4.0.7...v4.1.0) - 2019-11-12
  - Added favicon_pack_tag to generate favicon links [#2281](https://github.com/rails/webpacker/pull/2281)
  - Add support for Brotli compression [#2273](https://github.com/rails/webpacker/pull/2273)
  - Support .(sass|scss).erb [#2259](https://github.com/rails/webpacker/pull/2259)
  - Elm: Enable production optimizations when compiling in production [#2234](https://github.com/rails/webpacker/pull/2234)
  - fixes webpacker:clean erroring because of nested hashes [#2318](https://github.com/rails/webpacker/pull/2318)
  - Revert of production env enforcement [#2341](https://github.com/rails/webpacker/pull/2341)
  - Add a preload_pack_asset helper [#2124](https://github.com/rails/webpacker/pull/2124)
  - Record the compilation digest even on webpack error [#2117](https://github.com/rails/webpacker/pull/2117)
  - See more changes [here](https://github.com/rails/webpacker/compare/v4.0.7...v4.1.0)

- initialize package