channels are now dynamically allocated and can be garbage
collected. note that channels do NOT live on the mp heap
so their memory footprint won't trigger a gc, we rely on
pyst3m just doing that on its own every now and then.

bl00mbox and radspa have grown up. It is time for them to
gain independence in their very own repositories.

Check out gitlab.com/moon2embeddedaudio for future updates
or contributing.

We will continue to push updates to the flow3r project and
add hardware-specific features.

We see no reason to submodule it right away, but if it is
preferable for the flow3r firmware repo we're open to it.

Thanks for all the support and kind words, we'll try our
best to polish all the rough spots and add a ton of plugins
and features :D!

Phew.

This was mostly blocked by Micropython, but it has since then also
upgraded to IDF 5: https://github.com/micropython/micropython/commit/e4650125b88a35f074097f16d84a8f49bd22ac06

We take that change and selectively apply it where necessary. However,
it's not a 1:1 patch apply, as we already were on a somewhat forked
Micropython, and we also want to support IDF 5.1, not 5.0.

We also bump up the IDF distribution brought in by Nix, and fix some
warnings that have since turned into errors due to toolchain changes.