Add more checks on repo status #29

Job	Run time
R Package Checks / lintr / lint	1m 23s
R Package Checks / codecov / test-coverage	1m 24s
R Package Checks / docs-check / docs-check	1m 33s
R Package Checks / check-R-updates / updated-files	4s
R Package Checks / r-cmd-check / macOS-latest (release)	2m 46s
R Package Checks / r-cmd-check / windows-latest (release)	6m 27s
R Package Checks / r-cmd-check / windows-latest (3.6)	4m 16s
R Package Checks / r-cmd-check / windows-latest (4.1)	4m 40s
R Package Checks / r-cmd-check / ubuntu-latest (release)	1m 29s
R Package Checks / r-cmd-check / ubuntu-latest (devel)	3m 12s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-1)	1m 49s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-2)	1m 38s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-3)	1m 54s
R Package Checks / r-cmd-check / ubuntu-latest (oldrel-4)	1m 37s
R Package Checks / version-check / version-check	52s
	35m 4s

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