v0.33.7

Fix:

• I²C NACK handling
• I2C::reg_write can send register information with data

Changed/Updated:

• Interrupt selection identifier added in PCF2131 and PCF85263 classes
• SEMIHOST_OPERATION compilation flag added
• scan() method is moved from I2C_device class to I2C class
• I2C::scan() default scan range is limited to 124 ()
• I2C::err_callback() is available to change behavior when I²C error happened