v3.3 'Mele-on Grayza'

- Fixed bug in the Movies menu setting the initial position of the camera.

- All major animation functions are now in the Movies menu. You can set more or less everything : elevation angle of the camera, field of view, number of threads to use for rendering, size of the rendered images, and whether you want anti-aliasing or or not. You can also set the start frame of the animation (in case rendering got interrupted), render a still image, and play back existing images if any were created.

- The camera setup is now much more robust. If any part of it is missing, the entire thing gets re-created.

- Pressing "Go !" now deletes any existing filaments before loading the filament mesh, if one exists. This prevents naming conflicts.

- Camera is now a sensible size and has a higher distance-rendering limit.

- Separate "TimeSeries" and "RotationMovie" subdirectories are now used to store animations. This prevents rotation movies (which take a few minutes to render) from overwriting time series animations (which can take a few hours). If you're going to want to render multiple movies of both types, you should rename these directories when each one has finished rendering.

- No longer necessary to first load one FITS file to render a time series - you can just enter the file list. If a list is entered, getting the min/max values will use the first file in the list. It's still a good idea to look at one FITS file first, but the script will run if you don't. There's still a bug with this, but it happens very infrequently so it's hard to track down.

- Navigation now works for fake cubes (pixel coordinates displayed in the RA/Dec/Velocity boxes).