Optimized tests under travis CI

.travis.yml

@@ -1,5 +1,8 @@
 language: node_js
 
+env:
+  - YARN_GPG=no
+
 jobs:
   include:
     - os: linux
@@ -19,6 +22,3 @@ cache:
     - node_modules
 
 script: "yarn run travis"
-
-after_success:
-  - yarn run test:coveralls

package.json

@@ -104,9 +104,9 @@
     "test:devCompilePerformance": "ts-node test/dev/dev-compile-performance.ts",
     "test:devRuntimePerformance": "ts-node test/dev/dev-runtime-performance.ts",
     "test:full": "yarn run test:dev && yarn run test:mocha-coverage && yarn run test:mocha-memory-performance",
-    "test:coveralls": "yarn run test:mocha && nyc report --reporter=text-lcov | coveralls",
     "test:mocha": "mocha --require ts-node/register --require source-map-support/register test/index.spec.ts --exit",
-    "test:mocha-coverage": "nyc --reporter text-summary yarn run test:mocha",
+    "test:mocha-coverage": "nyc --reporter text-summary --no-clean yarn run test:mocha",
+    "test:mocha-coverage:report": "nyc report --reporter=text-lcov",
     "test:mocha-memory-performance": "cross-env NODE_OPTIONS=--max-old-space-size=220 mocha --require ts-node/register test/performance-tests/JavaScriptObfuscatorMemory.spec.ts",
     "test": "yarn run test:full",
     "eslint": "eslint src/**/*.ts",