Update deps, enable cache for ESLint, tweak gitignore. (#438)

* Update devDependencies.

* Enable cache for ESLint.

Also, tweak .gitignore/.eslintignore.

.eslintignore

@@ -3,5 +3,4 @@
 /coverage/
 /dist/
 /node_modules/
-/src-cov/
 /vendor/

.gitignore

@@ -1,20 +1,28 @@
 # Logs
-logs
+logs/
 *.log
 
 # Runtime data
-pids
+pids/
 *.pid
 *.seed
 
-.nyc_output/
-coverage/
-src-cov
-
-node_modules/
+# Local bootstrap repository
 /bootstrap/
-.bundle/
-vendor/
+
+# Cache
+/.cache/
+
+# Coverage
+/.nyc_output/
+/coverage/
+
+# Bundler files and gems
+/.bundle/
+/vendor/
+
+# npm packages
+/node_modules/
 
 # Vim generated files
 *.swp

package.json

@@ -17,7 +17,7 @@
     "build": "npm run browserify && npm run minify",
     "dist": "npm run build",
     "coveralls": "nyc report --reporter=text-lcov | coveralls",
-    "eslint": "eslint .",
+    "eslint": "eslint --cache-location .cache/.eslintcache .",
     "lint": "npm run eslint",
     "minify": "terser --compress typeofs=false --mangle --comments \"/^!/\" --source-map \"includeSources,url=bootlint.min.js.map\" --output dist/browser/bootlint.min.js dist/browser/bootlint.js",
     "nodeunit": "nodeunit test",
@@ -44,15 +44,15 @@
     "async": "^2.6.2",
     "browserify": "^16.2.3",
     "coveralls": "^3.0.3",
-    "eslint": "^5.14.1",
+    "eslint": "^5.15.1",
     "jquery": "^3.3.1",
     "node-qunit-phantomjs": "^2.0.1",
     "nodeunit": "^0.11.3",
     "nyc": "^13.3.0",
     "qunit": "^2.9.2",
     "rewire": "^4.0.1",
-    "sinon": "^7.2.5",
-    "terser": "^3.16.1"
+    "sinon": "^7.2.7",
+    "terser": "^3.17.0"
   },
   "main": "./src/bootlint.js",
   "bin": {