Negmas

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- [Debugging support] making negmas scml behave similar to negmas tournament worlds
- [Improved robustness] making insurance calculations robust against rounding errors.
- [Internal change with no behavioral effect] renaming pay_insurance member of InsuranceCompany to is_insured to better document its nature
- [Debugging support] adding --balance to negmas scml to control the balance

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- separating ControlledNegotiator, ControlledSAONegotiator. This speeds up all simulations at the expense
of backward incompatibility for the undocumented Controller pattern. If you are using this pattern, you
need to create ControlledSAONegotiator instead of SAONegotiator. If you are not using Controller or you do not know
what that is, you probably safe and your code will just work.
- adding logging of negotiations and offers (very slow)
- preventing miners from buying in case sell CFPs are posted.
- avoiding exceptions if the simulator is used to buy/sell AFTER simulation time
- adding more stats to the output of negmas scml command
- revealing competitor_params parameters for anac2019_std/collusion/sabotage. This parameter always existed
but was not shown in the method signature (passed as part of kwargs).

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- Avoiding backward incompatibility issue in version 0.2.23 by adding INVALID_UTILITY back to both utilities
and apps.scml.common

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- documentation update
- unifying the INVALID_UTILITY value used by all agents/negotiators to be float("-inf")
- Added reserved_value parameter to GreedyFactoryManager that allows for control of the reserved value used
in all its ufuns.
- enable mechanism plotting without history and improving plotting visibility
- shortening negotiator names
- printing the average number of negotiation rounds in negmas scml command
- taking care of negotiation timeout possibility in SCML simulations

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- adding avoid_free_sales parameter to NegotiatorUtility to disable checks for zero price contracts
- adding an optional parameter "partner" to _create_annotation method to create correct contract annotations
when response_to_negotiation_request is called
- Avoiding unnecessary assertion in insurance company evaluate method
- passing a copy of CFPs to on_new_cfp and on_cfp_removal methods to avoid modifications to them by agents.

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- logging name instead of ID in different debug log messages (CFP publication, rejection to negotiate)
- bug fix that caused GreedyFactoryManagers to reject valid negotiations