Automatic longitude wrapping (bugfix towards 1.1.1)
Add check on valid latitude in [-90:+90] (and associated test)
Be more specific about the valid longitude range [-180:+180[. Add a test for utils.wrap_longitudes()
Be specific about the valid range of longitudes
Merge branch 'release-v1.1.1' into hotfix-1.1.1

Conflicts:
	pyresample/geometry.py
	test/test_geometry.py
	test/test_grid.py
Merge the hotfix and the unittest restructuring into the release branch.


Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Removing old test directory.

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Merge branch 'release-v1.1.1' into pre-master

Conflicts:
	pyresample/geometry.py
	pyresample/kd_tree.py
	test/test_geometry.py