adafruit_ble_adafruit causes crash on connection

[dhalbert]

Running ble_adafruit_feather_bluefruit_sense.py on a Feather Sense causes a crash on connection from the Bluefruit Playground app.

It works fine with 6.0.1, but crashes with 6.1.0.

Thanks to Southern Dragon in discord for finding this.

[dhalbert]

It appears this is a ulab issue. ble_adafruit_feather_bluefruit_sense.py uses ulab to make some vector arithmetic easy. The vector is then copied to a BLE characteristic. There's a bug when that happens. The bug seems to have been introduced when ulab was updated, between 6.1.0-beta.1 and 6.1.0-beta.2. v923z/micropython-ulab#328

[dhalbert]

Fixed by #4229.