Re-assigning a move is not limited anymore to the last turn (only to the
current turn, and even that limitation could be removed without too much
work).
It is mostly working, but many things are still missing.
In particular:
- ability to enter (or change) moves for a past turn
- ability to change the rack (manually, or randomly)
- ability to add/remove players during the game
- support for solos, warnings, penalties
- support for table number
- more ergonomic interface
- non regression tests
- ... and probably bugs to fix
