Merge pull request #61 from Freudator86/fm/certsync-watcher-heartbeat #139

Job	Run time
Behavior tests (Herdr)	4m 59s
Lint shell scripts	8m 26s
Behavior portable parallel 1	1m 6s
Repo invariants	8s
Behavior portable serial	20m 16s
Test coverage guard	7s
Behavior portable parallel 2	1m 36s
Stock macOS Bash snapshot compatibility	2m 2s
Behavior timing aggregate	7s
	38m 47s

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