Platformio Examples Versions Save

• Update example with STM32 Cube
• Update links to ESP8266 docs // Resolve #17

• Update examples with mbed 5.5

• Simba ESP WiFi example for version 15.0.0

• Add new example with unit testing and STM32Cube
• Add default environment for each example
• Reorganize examples

Add new examples with STM32Cube framework

New ESP IDF examples: BLE, Coap Server, Peripherals UART, Storage SDCard