r.kappa: Switch to JSON output using Parson library#6977

saket0187 wants to merge 3 commits intoOSGeo:mainOSGeo/grass:mainfrom

saket0187:rewrite-r-r.kappa-for-parson-supportsaket0187/grass:rewrite-r-r.kappa-for-parson-supportCopy head branch name to clipboard