examples/source_model:

Planar surfaces of characteristic fault sources must have top/bottom edges
which are completely horizontal.
models:

s/lon/longitude/ and s/lat/latitude/ in `Point`.
hazard/parsers:

s/lon/longitude/ and s/lat/latitude/ to match changes to `models.Point`.
tests/hazard/parsers_test:

Fixed a PEP8 issue (line too long).
tests/hazard/parsers_test:

s/lon/longitude/ and s/lat/latitude/ to make the broken parsing test pass.