feat: update to webpack 4

Author: clydin

.travis.yml

@@ -50,10 +50,11 @@ matrix:
  os: linux
  script: node tests/run_e2e.js --nb-shards=4 --shard=3 --nosilent
  env: e2e-3
- - node_js: "8"
- os: linux
- script: node tests/run_e2e.js --eject "--glob=tests/build/**"
- env: eject
+ # WEBPACK4_DISABLED - eject temporarily disabled for webpack 4 integration
+ # - node_js: "8"
+ # os: linux
+ # script: node tests/run_e2e.js --eject "--glob=tests/build/**"
+ # env: eject
 
  # Optional stage.
  - stage: optional