Enabling additional MicroPython features

[laurensvalk]

Opening this for discussion.

Documenting (and finalizing some of the) MicroPython functionality and modules is part of the v3.1 roadmap. It would be nice if we can do anticipated features while we are at it.

We don't need to enable all of these, but it's worth having a look. On Prime Hub, these are the size increases:

base: 228292

• bytearray: +3232
• set: +2396
• ustruct: +1388

total: +7K

bytearray and ustruct would seem useful for hub-to-hub communication which will rely heavily on byte streams.

Set is probably less critical.

This intends to address pybricks/support#140

[dlech]

Would we change buttons.pressed() to return a set on platforms that support it?

[laurensvalk]

Perhaps unsurprisingly, but archiving for future reference, enabling array is only 276 more bytes if bytearray is enabled. I personally don't really use it much.

[laurensvalk]

Would we change buttons.pressed() to return a set on platforms that support it?

Perhaps not now, so let's leave out set as it may not be worth the 2396 bytes. We can reconsider it later when we know how much space Bluetooth will require.