v1.2.0

### Releases v1.2.0

1. Restore cpp code besides Impl.h code to use in case of `multiple definition` linker error. See [`Change Implementation to seperate *.h and *.cpp file instead of *.h and *-Impl.h`](khoih-prog/ESP_WiFiManager#38) and [`Support building in PlatformIO PR`](khoih-prog/ESP_WiFiManager#20). Also have a look at [**HOWTO Fix Multiple Definitions Linker Error**](https://github.com/khoih-prog/ESPAsync_WiFiManager#HOWTO-Fix-Multiple-Definitions-Linker-Error)
2. Fix bug [/close does not close the config portal](#16).

Author: khoih-prog

platformio/platformio.ini

@@ -33,7 +33,7 @@ lib_deps =
   ESP AsyncTCP@~1.2.2
   AsyncTCP@~1.1.1
   ESP_DoubleResetDetector@~1.0.3
-; PlatformIO 5.x, uncomment the below 3 lines and delete the 4 lines above
+; PlatformIO 5.x, uncomment the below 4 lines and comment the 4 lines above
 ; me-no-dev/ESP Async WebServer@~1.2.3
 ; me-no-dev/ESPAsyncTCP@~1.2.2
 ; me-no-dev/AsyncTCP@~1.1.1