Change `Log` emitters to not emit event when block output is `nil`#12000

Merged

straight-shoota merged 3 commits intocrystal-lang:masterfrom robacarp:prevent_log_emitting_with_nil

Apr 27, 2022

+39-21

Commits on Apr 14, 2022

prevents log.[level] {nil} from emitting anything
robacarp
committed

Commits on Apr 15, 2022