Cap. Hindsight

Does not build

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Build failes with the following message ``` Libraries/Auxiliary.hs:766:10: Warning: ‘Id’ is an instance of Monad but not Applicative - this will become an error in GHC 7.10, under the Applicative-Monad...

Enhance documentation

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Presumably on the github wiki - [x] 1. Making moves - [x] 2. Superpositions - [x] 3. Measurements - [ ] 4. Entanglement - [ ] 5. Qeird quantum pawns...

So that players and spectators can post short messages in real time

Cache probabilities in RAM each time a move is made. This presumably would save computational time, because rendering a probabilistic interpretation is kinda heavy

- [ ] Generate three keys for each board: for white player, for black player and for spectators - [ ] Show when players are online