Increment version number to 1.10.0 #2670

Job	Run time
website / pkgdown	2m 27s
routine / routine	5m 17s
R-CMD-check / setup	20s
R-CMD-check / macOS-latest (4.4.2)	3m 17s
R-CMD-check / windows-latest (4.4.2)	4m 58s
R-CMD-check / ubuntu-latest (devel)	8m 22s
R-CMD-check / ubuntu-latest (4.4.2)	5m 49s
R-CMD-check / ubuntu-latest (4.3.3)	5m 39s
R-CMD-check / ubuntu-latest (4.2.3)	8m 45s
R-CMD-check / ubuntu-latest (4.1.3)	5m 23s
R-CMD-check / ubuntu-latest (4.0.5)	6m 0s
	56m 17s

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