------------------ * critical bug was fixed in viewer_4D
0.8.3
------------------ * critical bug was fixed in viewer_4D
0.8.2
------------------ * by pressing i, you get shapes info, m shows the mask and F5 updates the mask.
0.8.1
------------------ * viewer_4D is a lot more concise and bug free.
0.8.0
------------------ * markimage bug is fixed really as US version of centre is center. * napari based GUI is added to mcemtools. * bianary files can be read too.