temporary commit; work in progress
switched to stringi for string handling
split out feature merging and trump reduction into separate files
first commit
changed source names (GM, RA, PH)
assigned proper file extensions for tab-delimited files
removed spuriously inserted quotation marks in Sa'ban
standardized header
now with GM and SAPHON!
added notes for questionable graphemes
Merge pull request #28 from drammock/addISOtoSPA

use stringi for aggregation and feature merging