HackRF One: started hardware design by copying Jawbreaker
removed boot headers, added reset and DFU pushbuttons
removed some DNP parts and 0 ohm resistors
removed USB LEDs
removed U3 test points (there is another UART exposed on the ISP header)
fixed VCCIO1 to VCC
fixed MAX5864 OVDD to VCC
removed PCB antenna
regulator feedback fix
removed more DNP parts
optional RTC XTAL
fixed clock input and output to 3.3V CMOS
fixed all clock generator output supplies to VCC
RTC expansion
high side switch for VAA (RF section power supply)
connected USB0 ID pin
VBUS header
SSP0 header
added I2C1 to SSP0 header (all expansion headers are subject to rearranging during layout)
broke out more I2S0 pins