Merge pull request #413 from BristolMyersSquibb/better-add-blocks #771

Job	Run time
lint / lint	4m 10s
smoke	2m 48s
coverage / coverage	2m 37s
check / macos-latest (release)	2m 45s
check / windows-latest (release)	4m 6s
check / ubuntu-latest (devel)	22m 58s
check / ubuntu-latest (oldrel-1)	6m 25s
pkgdown / pkgdown	3m 36s
	49m 25s

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