tidyverse 1.2.2.9000

Eliminate repeats in the package list when loading an odd number of packages (#94, #100, @dchiu911)
Fixed parse error of tidyverse package names (#93, #106, @coatless)

tidyverse 1.2.1

stringr and forcats have been added to the core tidyverse, so they are attached by library(tidyverse).
reprex joins the tidyverse to make it easier to create reproducible examples (#47)

On attach, tidyverse now makes better use of the horizontal space, printing packages and versions in two columns (#59). It only prints packages that it attaches, not packages that you've already attached. Development versions are highlighted in red.

You can now suppress this startup message by setting options(tidyverse.quiet = TRUE)
tidyverse_conflicts() now prints all conflicts that involve at least one tidyverse package; Previously it only omitted any intra-tidyverse conflicts (#26). I've also tweaked the display of conflicts to hopefully make it more clear which function is the "winner".
tidyverse_update() now just gives you the code you need to update the packges, since in general it's not possible to update packages that are already loaded.
feather is now actually in suggests.

Moved feather from Imports to Suggests - feather is part of the tidyverse but it's installation requirements (C++11 + little-endian) make it painful in many scenarios (#36).

Added a NEWS.md file to track changes to the package.
Membership changes:
- Removed DBI (since very different API, #16)
- Added feather (#15)
tidyverse_deps() and tidyverse_packages() are now exported so you can more easily see the make up of the tidyverse, and what package versions you have (#18, #23)
suppressPackageStartupMessages() now suppresses all messages during loading (#19). suppressPackageStartupMessages() is called automatically for all tidyverse packages (#27).