CRAN v1.0.0

[schloerke]

• [x] Reactivity vignette
• [X] document
• [x] devtools::check()
• [x] source("scripts/rhub.R") passes
• [x] devtools::check_win_release() - can perform, using regular shiny version for now
• [x] devtools::check_win_devel() - can perform, using regular shiny version for now
• [X] revdepcheck
• [x] cran comments
• [X] NEWS
• [x] DESCRIPTION