Bump broccoli-merge-trees, broccoli-funnel, and workerpool

.travis.yml

@@ -1,9 +1,7 @@
 language: node_js
 node_js:
- - "6"
- - "8"
  - "10"
- - "11"
+ - "12"
 
 cache:
  yarn: true

appveyor.yml

@@ -4,7 +4,7 @@
 environment:
  matrix:
  - nodejs_version: "10"
- - nodejs_version: "11"
+ - nodejs_version: "12"
 
 # Install scripts. (runs after repo cloning)
 install:

package.json

@@ -38,16 +38,16 @@
  "dependencies": {
  "@babel/core": "^7.11.0",
  "@babel/polyfill": "^7.10.4",
- "broccoli-funnel": "^2.0.2",
- "broccoli-merge-trees": "^3.0.2",
+ "broccoli-funnel": "^3.0.3",
+ "broccoli-merge-trees": "^4.2.0",
  "broccoli-persistent-filter": "^2.2.1",
  "clone": "^2.1.2",
  "hash-for-dep": "^1.4.7",
  "heimdalljs": "^0.2.1",
  "heimdalljs-logger": "^0.1.9",
  "json-stable-stringify": "^1.0.1",
  "rsvp": "^4.8.4",
- "workerpool": "^3.1.1"
+ "workerpool": "^6.0.2"
  },
  "devDependencies": {
  "@babel/plugin-transform-block-scoping": "^7.10.5",
@@ -65,6 +65,6 @@
  "ps-node": "^0.1.6"
  },
  "engines": {
- "node": ">= 6"
+ "node": "10.* || >= 12.*"
  }
 }