Rewording
Merge remote-tracking branch 'origin/develop' into develop
Typo
Do not configure SPI and ports in driver.
spi.write -> spi.writeReadBlocking
Add DFU programmer for STM32. 

ToDo: 
 - Unify with dfu-programmer.py
 - Test with other STMs (adopt VID:PID)
UI: Led: Rename `run()` methods to `update()`.
Gpio: Refactor xpcc::Gpio::HIGH to xpcc::Gpio::High.
Gpio: Refactor xpcc::Gpio::LOW to xpcc::Gpio::Low.
I2C: Refactor xpcc::I2c::READ to xpcc::I2c::Read.
I2C: Refactor xpcc::I2c::WRITE to xpcc::I2c::Write.
I2C: Refactor I2c READ/WRITE also in interface.
Scons: Fix `scons templates`.
Use stm32f3_discovery.hpp instead of manual typedefs.
[quickfix] Activate CAN1 on STM32 F3.
Add example for STM32 F3. Tested.
Merge branch 'develop' of github.com:roboterclubaachen/xpcc into develop
Scons: Helper: fix size output for avr

With our changes to the build system avr now has
a DEVICE_FILE env variable, too.
Tools: DFG: Update license text.
Documentation
Update serial port classes
Merge branch 'develop' of https://github.com/roboterclubaachen/xpcc into develop