feat: upgrade to istanbul-lib-instrument with support for 'const foo = function () {}' name preservation. upgrade to istanbul-lib-hook with fix for ts-node. (#494)

Author: bcoe

package.json

@@ -83,8 +83,8 @@
     "foreground-child": "^1.5.3",
     "glob": "^7.0.6",
     "istanbul-lib-coverage": "^1.0.0",
-    "istanbul-lib-hook": "^1.0.0-alpha.4",
-    "istanbul-lib-instrument": "^1.4.0-candidate.0",
+    "istanbul-lib-hook": "^1.0.0",
+    "istanbul-lib-instrument": "^1.4.2",
     "istanbul-lib-report": "^1.0.0-alpha.3",
     "istanbul-lib-source-maps": "^1.1.0",
     "istanbul-reports": "^1.0.0",