HOTFIXES:

There has been 2 hotfixes

v0.20b

The last 3 bonus levels didn't unlock properly. The new version fixes that. 

If you reached the flag level and beat it in the old version (0.20), the levels wont appear if you update. You will have to manually unlock the levels from the main menu. Go to the pause menu, then "Skip levels" and select "Unlock all levels". Then confirm.

New profiles wont have this problem from 0.20b forward.

v0.20c

V0.20b had a change which made the level below unwinnable. V0.20c fixes that.

Sorry for the inconveniences.