Add more checks on repo status #26

Job	Run time
R Package Checks / lintr / lint	1m 20s
R Package Checks / docs-check / docs-check	1m 38s
R Package Checks / codecov / test-coverage	1m 48s
R Package Checks / check-R-updates / updated-files	3s
R Package Checks / r-cmd-check / macOS-latest (release)	2m 10s
R Package Checks / r-cmd-check / windows-latest (release)	2m 59s
R Package Checks / r-cmd-check / windows-latest (3.6)	3m 6s
R Package Checks / r-cmd-check / windows-latest (4.1)	2m 59s
R Package Checks / r-cmd-check / ubuntu-latest (release)	1m 46s
R Package Checks / r-cmd-check / ubuntu-latest (devel)	2m 42s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-1)	1m 48s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-2)	1m 56s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-3)	1m 38s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-4)	1m 42s
R Package Checks / version-check / version-check	1m 13s
	28m 48s

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