Next hardware release

[mstroh76]

• Solve errata
• Secure operation with USB connector supply together with batteries
• Batterie low valtuage protection
• Audio and vibration motors works with direct USB connector supply
• 8x instead of 10x LED-bar
• connect vibration motors to GPIO port with default pull-down resistor
• optimize for 4xAAA or 3xAA and remove DC-DC converter
• FET instead of transistor for backlight control
• HAT EEPROM
• 3 stage resistor divider 100K (10k+1K) for each ADC input, 1:10 divider
• ADC input work with USB connector supply too
• Remove the optional big diode