PinChangeInt library- To attach interrupts to multiple Arduino (Uno/Mega) pins

Version 1.71beta is now available for upload. From the Release Notes:

Code reordering: Starting in version 1.3 of this library, I put the code that enables
interrupts for the given pin, and the code that enables Pin Change Interrupts, ahead of actually
setting the user's function for the pin. Thus in the small interval between turning on the
interrupts and actually creating a valid link to an interrupt handler, it is possible to get an
interrupt. At that point the value of the pointer is 0, so this means that the Arduino
will start over again from memory location 0- just as if you'd pressed the reset button. Oops!

I corrected it so the code now operates in the proper order.
(EDITORIAL NOTE: If you want to really learn something, teach it!)

Minor code clean-up: All references to PCintPort::curr are now explicit. This changes the compiled
hex code not one whit. I just sleep better at night.

Numbering: Changed the numbering scheme. Beta versions will end with an odd number in the hundredths
place- because they may be odd- and continue to be marked "beta". I'll just sleep better at night. :slight_smile: