Override default “platformio.ini” with a custom using "-c, --project-conf" option // Resolve #1913

platformio/managers/core.py

@@ -27,7 +27,7 @@ CORE_PACKAGES = {
     "contrib-piohome": "^2.0.1",
     "contrib-pysite":
     "~2.%d%d.190418" % (sys.version_info[0], sys.version_info[1]),
-    "tool-pioplus": "^2.1.5",
+    "tool-pioplus": "^2.2.0",
     "tool-unity": "~1.20403.0",
     "tool-scons": "~2.20501.7" if util.PY2 else "~3.30005.0"
 }