v1.2.1

Fix small bugs:

1. more reliable log directory setter. We now no longer produce a daisy_logs directory as an artifact when running tests
2. serial server doesn't mark all blocks as success. If block marked as failed it is released as a failed block

Feature
Server.run_blockwise now returns the task state dict mapping task names to task states. This is useful if you ever want to know how many blocks failed, skipped, were orphaned etc.