Openap-top

New release with minor updates and fixes, changes are:
- 3D and 4D optimization logics
- updated examples

**Full Changelog**: https://github.com/junzis/openap-top/compare/v1.4...v1.5

New release with major updates:
- compatible with OpenAP v2
- 4d cost grid
- more robust optimization process
- update wind functions

New release with major updates:
- compatible with OpenAP v2
- 4d cost grid
- more robust optimization process