chore(package): update tsdx to version 0.10.3

Closes #13

Author: greenkeeper[bot]

package.json

@@ -55,7 +55,7 @@
     "immutable": "^4.0.0-rc.12",
     "prettier": "^1.18.2",
     "pretty-quick": "^1.11.1",
-    "tsdx": "^0.7.2",
+    "tsdx": "^0.10.3",
     "tslib": "^1.10.0",
     "tslint": "^5.18.0",
     "tslint-config-prettier": "^1.18.0",