prepare 2.7.2 (#7429)

cores/esp8266/TZ.h

@@ -1,7 +1,7 @@
 
 // autogenerated from https://raw.githubusercontent.com/nayarsystems/posix_tz_db/master/zones.csv
 // by script <esp8266 arduino core>/tools/TZupdate.sh
-// Thu May  7 19:02:21 UTC 2020
+// Tue Jul  7 07:38:29 UTC 2020
 //
 // This database is autogenerated from IANA timezone database
 //    https://www.iana.org/time-zones
@@ -105,7 +105,7 @@
 #define TZ_America_Cuiaba	PSTR("<-04>4")
 #define TZ_America_Curacao	PSTR("AST4")
 #define TZ_America_Danmarkshavn	PSTR("GMT0")
-#define TZ_America_Dawson	PSTR("PST8PDT,M3.2.0,M11.1.0")
+#define TZ_America_Dawson	PSTR("MST7")
 #define TZ_America_Dawson_Creek	PSTR("MST7")
 #define TZ_America_Denver	PSTR("MST7MDT,M3.2.0,M11.1.0")
 #define TZ_America_Detroit	PSTR("EST5EDT,M3.2.0,M11.1.0")
@@ -207,7 +207,7 @@
 #define TZ_America_Toronto	PSTR("EST5EDT,M3.2.0,M11.1.0")
 #define TZ_America_Tortola	PSTR("AST4")
 #define TZ_America_Vancouver	PSTR("PST8PDT,M3.2.0,M11.1.0")
-#define TZ_America_Whitehorse	PSTR("PST8PDT,M3.2.0,M11.1.0")
+#define TZ_America_Whitehorse	PSTR("MST7")
 #define TZ_America_Winnipeg	PSTR("CST6CDT,M3.2.0,M11.1.0")
 #define TZ_America_Yakutat	PSTR("AKST9AKDT,M3.2.0,M11.1.0")
 #define TZ_America_Yellowknife	PSTR("MST7MDT,M3.2.0,M11.1.0")

package.json

@@ -2,5 +2,5 @@
     "name": "framework-arduinoespressif8266",
     "description": "Arduino Wiring-based Framework (ESP8266 Core)",
     "url": "https://github.com/esp8266/Arduino",
-    "version": "3.0.0-dev"
+    "version": "2.7.2"
 }

platform.txt

@@ -5,8 +5,8 @@
 # For more info:
 # https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5-3rd-party-Hardware-specification
 
-name=ESP8266 Boards (3.0.0-dev)
-version=3.0.0-dev
+name=ESP8266 Boards (2.7.2)
+version=2.7.2
 
 # These will be removed by the packager script when doing a JSON release
 runtime.tools.xtensa-lx106-elf-gcc.path={runtime.platform.path}/tools/xtensa-lx106-elf