rename giss_data.py to data.py
remove useless station_uid method
math.radians ftw!
store only 3 decimal places in CSV file
round instead of truncating when converting
move input/ to top-level directory
move test and test-fixture to top-level
move test-fixture to test/.fixture
fix code/util/make151 for the new test/.fixture
better to run the code from top-level
edited the comparison to use a bullet list
put the output in the output/ directory