Windows10 minor fixes and additions

-fixed permission problems for the config file on windows
-added cancel button for ongoing calculations
-overall perfomance boost

Windows10 setup-file release and minor changes

This version fixes some typos and introduces the usage of the Pykep algoryhtms for the rendezvous calculation.

Also the binary is now available as a complete installation-setup which ultimately improves the startup-time enormously.

First Windows 10 Binary release

The first release as pre-compiled package. No python installation needed. Just download and start the executable.