it's literally there in the linked readme: Version 2 of Microdot incorporates feedback received from users of earlier releases, and attempts to improve and cor

it's literally there in the linked readme: Version 2 of Microdot incorporates feedback received from users of earlier releases, and attempts to improve and correct some design decisions that have proven to be problematic. For this reason most applications built for earlier versions will need to be updated to work correctly with Microdot 2. The Migration Guide describes the backwards incompatible changes that were made.