Update Arduino core to 2.7.0

Author: valeros

boards/eduinowifi.json

@@ -0,0 +1,32 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "eagle.flash.4m1m.ld"
+    },
+    "core": "esp8266",
+    "extra_flags": "-DESP8266 -DARDUINO_ARCH_ESP8266 -DARDUINO_ESP8266_SCHIRMILABS_EDUINO_WIFI",
+    "f_cpu": "80000000L",
+    "f_flash": "40000000L",
+    "flash_mode": "dio",
+    "mcu": "esp8266",
+    "variant": "eduinowifi"
+  },
+  "connectivity": [
+    "wifi"
+  ],
+  "frameworks": [
+    "arduino",
+    "esp8266-rtos-sdk",
+    "esp8266-nonos-sdk"
+  ],
+  "name": "Schirmilabs Eduino WiFi",
+  "upload": {
+    "maximum_ram_size": 81920,
+    "maximum_size": 4194304,
+    "require_upload_port": true,
+    "resetmethod": "nodemcu",
+    "speed": 115200
+  },
+  "url": "https://github.com/schirmilabs/Eduino-WiFi",
+  "vendor": "Schirmilabs"
+}

platform.json

@@ -46,7 +46,7 @@
     "framework-arduinoespressif8266": {
       "type": "framework",
       "optional": true,
-      "version": "~3.20603.0"
+      "version": "~3.20700.0"
     },
     "framework-esp8266-rtos-sdk": {
       "type": "framework",