Allow For Optional Inclusion of Pre-release Libraries #49
Description
We could expand the VERSIONS dict to allow for optional inclusion of any pre-release libraries.
Currently, 5.x has a BLE API change, with a corresponding BLE library update. The library update is only in pre-release though, so the bundle doesn't include it. Now that a 5.x-alpha library bundle is imminent, it would be good to include the relevant updates.