Update release

Fixed 4 bugs and changed the chopping positions. Bugfixes include:

1. Corrections to the telescope beam size/dimension analysis
2. The code now ensures an integer number of timesteps in the separation between chopping positions, to avoid digitization errors when using on-off chopping methods such as ABBA chopnodding
3. The code also avoids these digitization errors in the gridpoints at the different sky positions
4. The top and bottom position have been removed and are currently under development. The new version of the code includes an empty center position as well as one with a galaxy included.