v3.1.2

• Rename pulseIn => pingPulseIn

v3.1.0

• Servo pin mapping for Photon and P1

v3.0.0

New support for:

PING_READ 
  [0x08, Pin]
I2C_CONFIG 
  [0x30, Delay LSB, Delay MSB]                  
I2C_WRITE 
  [0x31, Address, DataLength LSB, DataLength MSB, ...up to 32 bytes ]                  
I2C_READ 
  [0x32, Address, Register LSB, Register MSB, BytesToRead LSB, BytesToRead MSB ]
I2C_READ_CONTINUOUS 
  [0x33, Address, Register LSB, Register MSB, BytesToRead LSB, BytesToRead MSB ]