Begin unwrapping a lot of static functions.
Refactor output.
Start factoring all "show"-s under one function.
Remove unused code.
Keep unwrapping and deleting old code.
Moving some types to dedicated files.
Move some initializations in implementation.
Minor changes in blobs tracker.
Start implementing spot tracker.
Implement insertion in spots tracker.
Finish to implement the spots tracker.

Let's hope it works!
Defaults for spots tracker.
Adapt SubtrackerContext to new interface. But it still requires testing!
Fix some bugs, but not the ones that make the program crash.
Fix a couple of nasty bugs.