STM32LowPower library v1.0.3

attachInterruptWakeup() add parameter to define LowPowerMode, See #20

STM32LowPower library v1.0.2

Add library dependencies thanks @per1234 (#15)

STM32LowPower library v1.0.1

Update required after STM32RTC version 1.0.2

Require:

• Core version 1.4.0
• STM32RTC version 1.0.2

First release of the STM32LowPower library

Requirements:

• Arduino_Core_STM32 version >= 1.3.0
• STM32RTC