- v0.1 2023-05-05 'Couscous'
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- * compute Geohash[1] character hash from wgs84[2] lat/lon
- * compute wgs84 lat/lon/delta_lat/delta_lon from geohash character hash
- * a RFC3875 CGI producing GPX[3]
- * have a DOAP[4] rdf self-description
- [1] https://en.wikipedia.org/wiki/Geohash
- [2] https://en.wikipedia.org/wiki/WGS84
- [3] http://www.topografix.com/gpx.asp
- [4] https://en.wikipedia.org/wiki/DOAP
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