get_data: Get data from Arable for devices
In byzheng/RArable: A client for connecting to Arable and making data queries.

Get data from Arable for devices

1 2	get_data(devices, start, end, location = NULL, format = "csv", order = "time", measure = "hourly", select = "all", limit = 1000)

`devices`	A character vector of device names
`start`	The start timestamp
`end`	The end timestamp
`location`	optional; id of a location to retrieve data for; devices ignored if this is present
`format`	optional; use format=csv to get csv-formatted data; otherwise data is returned as json
`order`	optional; "time" (time ascending) or "-time" (time descending)
`measure`	optional; "calibrated", "hourly", or "daily"
`select`	optional; "all", "spectrometer", "microclimate", or "radiometer"
`limit`	optional; maximum number of data points to return; defaults to 1000