LowPower library for TinyScreen+

[tastewar]

For my watch project, I want the uC to generally be asleep, and awaken on any button press. Since the TS+ uses the ATSAMD21G18A and this is supported by the Low-Power library (https://github.com/rocketscream/Low-Power) I want to assume this can all work, but I have a few questions:

• has anyone used this that might have code to share
• can I set things up so that any button press will awaken the device
• there's a caveat about SAMD core requiring a patch for external interrupts to work -- any guidance on doing this?

[tastewar]

3. looks like the pull request was merged and available since Arduino 1.6.5, so I think that concern is gone, just leaving 1 and 2...