I/O Registry does not track digitalRead/Write operations

[ttbombadil]

It should analyse the code and the use of digitalWrite and digitalRead. The result is presented in the I/O-Registry tab in a table of all available pins. The difficult part ist, that pinnumbers can also be calculated. For example:

for (byte i=0; i<13; i++)
digitalWrite(i, HIGH);

This is also done for the function pinMode which still works. It is a good idea to implement the same way for all functions named in this issue.