PLAT-4091 - Batch DB listener can handle cycles running in parallel
PLAT-4091 - Batch schema changes to handle execution sequences with more than one step
PLAT-4181 - Synchronize DbBatchWriter methods to fix race condition
PLAT-4200 - PLAT3249.deepClone() reuses compiled calc configs

They were previously rebuilt from graphs so the market data selectors
were lost. This was a problem when compiled configs were cached and
cloned because the cloned versions couldn't correctly participate in
scenarios without the selectors.