[STM32L0] Update version in files, add Cube driver release note
[STM32L0] Update registers map file
[STM32L0] Remove useless files
[NUCLEO_L053R8] Update GPIO structures

Due to latest registers map file used.
Restructure and cleanup targets.py for easier navigation
Remove "Silicon" from comments
[TARGET_DISCO_F334C8] reorder structure - part1

Moving targetspecific files to new folder in new structure
[TARGET_DISCO_F334C8] reorder structure - part2

Removing cmsis files.
Merge pull request #647 from screamerbg/master

Tools: Restructure targets.py for easier navigation
Merge pull request #644 from bcostm/master

Targets: Nucleo: Update of STM32L0 Cube driver + NUCLEO_L053R8 hal
Merge pull request #650 from ohagendorf/reorder_f3xx

Targets: DISCO_F334 - Reorder f3xx