Handle cases where SEM fov > Opt fov and SEM fov << Opt fov
Check if ScanGrid gave one image or list of images
FindOverlay moved to align
Got rid of ScanGrid
Deleted
Update OverlayStream (find_overlay moved to align)
Removed
Updated to use align instead of find_overlay
Removed unused imports
find_overlay moved to align package
find_overlay_test moved to align
acq align: separate grid scanning procedures into 2 functions

One function for each type of scanning

Also ensures that spot procedure works multiple times in a row.

Add a SPOT_SIZE constant to indicate more clearly the code related to the physical CL spot size
Merge branch 'kimon-FineFOV'