* BIG CHANGES for Circuit Playground boards!
    - Renumber digital pins on Circuit Playground Express and Circuit Playground Bluefruit to match analog pin numbers marked on the board.
    - Map internal pins to digital pins 8-14: button A, button B, slide switch, IR receive, IR send, user LED, NeoPixels.
    - On CP Bluefruit, IR receive, IR send are replaced with PDM mic data and clock.
    - This change may impact existing projects but will make those boards easier to use. Many projects can be updated simply by re-importing the relevant libraries.
    - Update libraries to use the new Circuit Playground Express pin numbers.
* Add an option to use internal pull-up resistor with analog read (requested by Leah).
* Improvements to Motion library for more reliable step counting.
* Randomize the random number generator seed so the sequence is different every time.
* Fix: Can't set digital pin using a boolean reporter to specify the pin value.
* Give an error if a non-integer pin number is passed to a pin command.
* Tweaks to prevent ED1 false capacitive button positives (thanks, José!).
* Make the "useWhite" parameter optional "attach NeoPixels" (RGBW NeoPixels are rare).
* When reporting a list value to the IDE, only send the first 100 elements.