2.5.0-beta3 release (#5673)

Author: d-a-v

platform.txt

@@ -6,7 +6,7 @@
 # https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5---3rd-party-Hardware-specification
 
 name=ESP8266 Boards (2.5.0-dev)
-version=2.5.0-dev
+version=2.5.0-beta3
 
 runtime.tools.xtensa-lx106-elf-gcc.path={runtime.platform.path}/tools/xtensa-lx106-elf
 runtime.tools.esptool.path={runtime.platform.path}/tools/esptool