Version 1.1.0

There are no ERRORs, WARNINGs, or NOTEs returned by devtools::check().

New function: make_json creates a JSON containing name/value pairs from a named vector. Optionally adds the JSON file name to the '.gitignore' (if one can be found in the working directory)
New function: solar_day_info identifies sunrise, sunset, solar noon, and day length for all dates within a user-specified range at particular coordinates
Function update: harmonize now includes new defensive warning/error checks with informative messages for likely sources of error
General improvement: unit tests added for all functions currently in package. Likely limited impact on users except better adherence to best practice will make for a stronger package in the long run

Version 1.0.0

First version of ltertools available on CRAN. There are no ERRORs, WARNINGs, or NOTEs returned by devtools::check().

• New function: read -- reads in all data files in a particular folder and stores them in a list
• New function: begin_key -- creates the start of a "column key" for data harmonization
• New function: harmonize -- performs column key-based harmonization of raw data
• New function: cv -- calculates coefficient of variation for a vector of numbers
• New function: convert_temp -- converts temperature values from one specified unit to another
• New dataset: lter_sites -- includes primary habitat, latitude/longitude coordinates, and funding start/end years for every site currently in the network
• New function: site_timeline -- creates a ggplot2-style timeline of all sites that meet the user-specified criteria (for site code and/or habitat)