Teensy 4.0 is now available

Another excellent addition to the form factor by Paul!

The first Teensy was my stepping stone off of the Arduino IDE and platform for modern embedded development. Library support and form factor make these excellent devices to integrate into one-off custom electronics projects.

With 4.0 it looks like we have an excess of IO and processing grunt, and I'm curious what the power consumption is like at the slower clock speeds.