ropensci/rnassqs: Ducks - Operations with Sales

This release incorporates improvements to usability and documentation resulting from the rOpensci review process, including:

Queries can be made both by passing a list of parameters or the parameters themselves directly. These two queries are equivalent:

# Method 1: specify query parameters as function arguments
rnassqs::nassqs(commodity="APPLES", year__GE = 2012)

# Method 2: specify a list of parameters as a single function argument
params <- list(commodity = "APPLES", year__GE = 2012)
rnassqs::nassqs(params)

Previously rnassqs managed keys in an unnecessarily complicated way. Now the package simply checks if the NASSQS_TOKEN environmental variable is set, and if not suggests how to set it.

Many changes to the Getting Started vignette and to function documentation should improve ease of use.