update changelog

update pyproj -> 3.6 (x/y axis order) & numpy -> 1.2 (int)

lonlat2xy() allows now multiple input values

Merge pull request #22 from TUW-GEO/develop

Update pyscaffold

license and requirements

changelog

updated changes.rst

bugfix on __init__ in tests

switched to unittests + removed subgrid-check in _lonlat2xy_subgrid()…

… --> returns now also coords outside of subgrid!

removed test for py3.4