I’m using platformio for teensy development (awesome!).
The latest version of the framework-arduinoteensy in platformio is 1.27 and I’d like to try out 1.28 now, ahead of the regular platformio release. How do I override the version that platformio provides with one of my own choosing?
On top of this, there’s a pre-release version of the cores component of that framework that I’d also like to test with.
What’s the cleanest way to switch between versions of frameworks?