test(project): use built-in progress reporter

* yields performance gains up to 30% compared to spec reporter

package-lock.json

@@ -5196,15 +5196,6 @@
       "integrity": "sha512-SDgh6V0CUd+7ruL1d3yG6lFzmJNGRNQuEuCYXLaorruNP9nwQfA7hpsp4clx4CbOo5Gsajh3qUOT7CrVStUKMw==",
       "dev": true
     },
-    "karma-spec-reporter": {
-      "version": "0.0.32",
-      "resolved": "https://registry.npmjs.org/karma-spec-reporter/-/karma-spec-reporter-0.0.32.tgz",
-      "integrity": "sha1-LpxyB+pyZ3EmAln4K+y1QyCeRAo=",
-      "dev": true,
-      "requires": {
-        "colors": "^1.1.2"
-      }
-    },
     "karma-webpack": {
       "version": "3.0.5",
       "resolved": "https://registry.npmjs.org/karma-webpack/-/karma-webpack-3.0.5.tgz",
@@ -8159,7 +8150,7 @@
     },
     "string_decoder": {
       "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
       "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
       "dev": true,
       "requires": {

package.json

@@ -58,7 +58,6 @@
     "karma-phantomjs-launcher": "^1.0.4",
     "karma-safari-launcher": "^1.0.0",
     "karma-sinon-chai": "^2.0.2",
-    "karma-spec-reporter": "0.0.32",
     "karma-webpack": "^3.0.0",
     "mkdirp": "^0.5.1",
     "mocha": "^5.2.0",

test/config/karma.distro.js

@@ -44,7 +44,7 @@ module.exports = function(karma) {
       'test/distro/' + VARIANT + '.js'
     ],
 
-    reporters: [ 'spec' ],
+    reporters: [ 'progress' ],
 
     customLaunchers: {
       ChromeHeadless_Linux: {

test/config/karma.unit.js

@@ -48,7 +48,7 @@ module.exports = function(karma) {
       [ suite ]: [ 'webpack', 'env' ]
     },
 
-    reporters: [ 'spec' ].concat(coverage ? 'coverage' : []),
+    reporters: [ 'progress' ].concat(coverage ? 'coverage' : []),
 
     customLaunchers: {
       ChromeHeadless_Linux: {