Negmas

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* [core] Adding to_dict/from_dict to all ufun types
* [core] Better random LinearAdditiveUtilityFunction
* [core] better implementation of stepall and runall
* [core] implementing keep_order=False for stepall()
* [tournaments] Adding negotiation tournaments.
* [situated] shuffle_negotiations option in World
* [bugfix] SAOSyncController never loses offers

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* [sao] Avoiding an issue with avoid-ultimatum if all agents sent None as their first offer
* [situated] bugfix in reporting mechanism exceptions
* [helpers] Adding one-thread mode
* [situated] enable agent printing by default
* [tournament] not setting log_negotiations for forced logs

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* [tournaments] udpating log_negotiations when forced to save logs
* [tournaments] saving negotiations
* [sao] bugfix AsporationController best_outcome
* [sao] avoiding repetition in trace and offers at the end
* [genius] disabling AgentTD
* [genius] disabling GeneKing
* [genius] testing only confirmed passing negotiators
* [genius] correcting some genius class names
* [testing] stronger genius testing
* [testing] shortening the time allowed for genius negotiators in tests

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* [genius] allowing the ufun of genius agents to be set anytime before negotiation start
* [core] bugfix. Type of issue value may be incorrect when exporting to xml
* formatting
* [bugfix] correcting getting partner agent names in controllers
* [elicitation] pandora unknowns sometimes were not set
* [helpers] bugfix in serialization: correctly serializing cloud pickalable objects
* [bugfix] some SAO mechanisms where timeouting without timeout set
* [genius] updating the set of tested genius agents

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* [sao] adding the ability to use sync-calls in SAOMechanism
* [situated] fixing not showing last step's conracts in draw

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* [sao][bugfix] correctly handling unexpected timeouts (Usually Genius)
* [minor] using warnings.warn instead or print whne appropriate
* [sao] improving synchronous controller handling
* [sao] correcting history storage. Avoiding repetition of the last offer sometimes
* [core] better handling of extra state in Mechanism
* [sao] default waiting is now 0 step and correcting times calculation
* [tournament] [bugfix] correcting str conversion for TournamentResults
* [sao] [bugfix] correcting storage of history in state
* [core] Supporting python 3.9
* [situated] bugfix when agents make exceptions (time was ignored)
* [situated] forcing all agents not to print anything
* [situated] forcing all agents not to print anything