data handling
dplyr: A Grammar of Data Manipulation
fuzzyjoin: Join Tables Together on Inexact Matching
janitor: Utilities for Data Cleaning
multidplyr: Partitioned data frames for 'dplyr'
naturalsort: Natural Ordering
plyr: Tools for Splitting, Applying and Combining Data
reshape: Flexibly reshape data
reshape2: Flexibly Reshape Data: A Reboot of the Reshape Package.
spdplyr: Data Manipulation Verbs for the Spatial Classes
tibble: Simple Data Frames
tidyr: Easily Tidy Data with spread() and gather() Functions
widyr: Widen, Process, then Re-Tidy Data