Version 2

• Added 3-axis Accelerometer by ST (LIS2DH12TR). Zephyr/nRF Connect SDK includes built-in support for this chip.
• Added Accelerometer INT1 pin to Pin 2 on the board.
• Added JMP1 to free up use for Pin 2 (INT1 pin on LIS2DH is push/pull an always on)
• The power supply enable signal, which originally was inaccessible, is now available next to the TX pin.
• Added JMP2 to disable PS_EN's connection to the power supply. "Always on" operation by shorting the middle and right pads on JMP2.
• Updated the bottom side labels thanks to Sparkfun's Buzzard tool. They deserve all the credit there!