Adjusted USB 'DISC' pad to support 2 x 0.1" header, intended to help STM32F303 boot from USB using built-in bootloader.
Increased clearance between STM32F and capacitors, intended to help assembly and rework
Updated 'User' silkscreen (bottom silk) to identify ADC and PWM pins. Also added silkscreen highlight around USB header pins to alert users to danger of using USB data pins as GPIO