v0.1.1-pre-alpha

• Improve the accuracy of elevation data in the elevationFromLatLon function by using the elevation of the nearest datapoint (previous was the average elevation of 4 nearest)
• re-write some of playground/getTarget.py, the resolveTarget function now returns values instead of just printing out (will allow for future feature of parsing all needed data directly from Drone image metadata)
• add *.tif to .gitignore to protect developer and tester's privacy (from accidental geoTiff upload)

needs more testing, initial results promising