Ability to resume paused plan and mark steps as skipped
TMP finalize phase in transaction
fix finalize
Prevent running execution plan twice
Test for empty action
Ability to resume action
Ability to skip a step
Ability to bootstrap the active record migrations
Postpone format block evaluation
Fix active_record persistence
tmp changes for katello e2e
Fix showing error for step
tmp - Deserialize references: TODO: still missing tests
Fix finalize phase when run phase empty
tmp - sort file storage execution plans by time desc
tmp - Fix subscribing to action without a flow: missing tests
Use UUID as unique execution plan id
Fix overwriting variables inside block
Whitespace
Use cursor just for sequence

It doesn't make sense to have cursors for concurrences/atoms.

It also now tries to run everything that's possible (instead of
stopping immediately on failure of some step).