[skip ci] Build website from commit 2a73902: 20220228T09:36:22

[skip travis] Build website from commit 26aae36: 20210130T17:12:49

[skip travis] Build website from commit b5c3136: 20210113T14:10:34

[skip travis] Build website from commit c361b55: 20200910T20:20:55

missing cr_email_set example

cran feedback 0.1.1