Add test tools and engines.node

- Add nyc & coveralls for code coverage (Level/community#34)
- Add engines.node to package.json (minimum is now 8)
- Disable Travis notifications (Level/community#40)
- Bump dependencies to prevent dedupe
- Add faucet to format test output
- Add dependency-check

.gitignore

@@ -1 +1,4 @@
 node_modules
+npm-debug.log
+package-lock.json
+.nyc_output/

.travis.yml

@@ -3,3 +3,6 @@ node_js:
   - 8
   - 10
   - 12
+after_success: npm run coverage
+notifications:
+  email: false

package.json

@@ -2,40 +2,50 @@
   "name": "multileveldown",
   "version": "2.3.1",
   "description": "multilevel implemented using leveldowns with reconnect support",
+  "author": "Mathias Buus (@mafintosh)",
+  "license": "MIT",
   "main": "index.js",
+  "scripts": {
+    "test": "standard && (nyc -s tape test/*.js | faucet) && nyc report",
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "protobuf": "protocol-buffers schema.proto -o messages.js",
+    "dependency-check": "dependency-check --no-dev .",
+    "prepublishOnly": "npm run dependency-check"
+  },
   "dependencies": {
-    "abstract-leveldown": "^6.1.1",
+    "abstract-leveldown": "^6.2.2",
     "duplexify": "^4.1.1",
-    "encoding-down": "^6.2.0",
+    "encoding-down": "^6.3.0",
     "end-of-stream": "^1.1.0",
     "length-prefixed-stream": "^2.0.0",
-    "levelup": "^4.1.0",
+    "levelup": "^4.3.2",
     "numeric-id-map": "^1.1.0",
     "protocol-buffers-encodings": "^1.1.0",
     "reachdown": "^1.0.0"
   },
   "devDependencies": {
     "@adorsys/encrypt-down": "^2.0.1",
     "concat-stream": "^2.0.0",
+    "coveralls": "^3.0.7",
+    "dependency-check": "^4.1.0",
+    "faucet": "^0.0.1",
     "level-compose": "^0.0.2",
     "memdown": "^5.0.0",
+    "nyc": "^14.1.1",
     "protocol-buffers": "^4.0.2",
     "standard": "^14.1.0",
     "subleveldown": "^4.1.1",
     "tape": "^4.11.0"
   },
-  "scripts": {
-    "test": "standard && tape test/*.js",
-    "protobuf": "protocol-buffers schema.proto -o messages.js"
-  },
   "repository": {
     "type": "git",
     "url": "https://github.com/Level/multileveldown.git"
   },
-  "author": "Mathias Buus (@mafintosh)",
-  "license": "MIT",
   "bugs": {
     "url": "https://github.com/Level/multileveldown/issues"
   },
-  "homepage": "https://github.com/Level/multileveldown"
+  "homepage": "https://github.com/Level/multileveldown",
+  "engines": {
+    "node": ">=8"
+  }
 }