🐛 [channel/machine, client] Sub-channel withdrawal without regist… #59
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…ering
The current implementation required a sub-channel to be registered on-chain before it could be withdrawn.
However, in the optimistic case, a sub-channel should be withdrawable into its parent channel without
blockchain interaction. We achieve this by modifying the state machine to allow for a transition from
phase final to phase withdrawing.
Signed-off-by: Matthias Geihs matthias@perun.network
Closes #58