Negmas

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- minor bug fix

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- adding more control to negmas tournaments:

1. adding --factories argument to control how many factories (at least) should exist on each production
level
2. adding --agents argument to control how many agents per competitor to instantiate. For the anac2019std
ttype, this will be forced to 1

- adding sabotage track and anac2019_sabotage to run it
- updating test assertions for negotiators.
- tutorial update
- completed NaiveTitForTatNegotiator implementation

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- resolving a bug in AspirationNegotiator that caused an exception for ufuns with assume_normalized
- resolving a bug in ASOMechanism that caused agreements only on boundary offers.
- using jnegmas-0.2.4 instead of jnegmas-0.2.3 in negmas jnegmas-setup command

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- adding commands to FactoryState.
- Allowing JNegMAS to use GreedyFactoryManager. To do that, the Java factory manager must inherit from
GreedyFactoryManager and its class name must end with either GreedyFactoryManager or GFM

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- improving naming of java factory managers in log files.
- guaranteeing serial tournaments when java factory managers are involved (to be lifter later).
- adding links to the YouTube playlist in README
- adhering to Black style

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- documentation update
- setting default world runs to 100 steps
- rounding catalog prices and historical costs to money resolution
- better defaults for negmas tournaments
- adding warnings when running too many simulations.
- added version command to negmas
- corrected the way min_factories_per_level is handled during tournament config creation.
- added --factories to negmas tournament command to control the minimum number of factories per level.
- improving naming of managers and factories for debugging purposes
- forcing reveal-names when giving debug option to any negmas command
- adding short_type_name to all Entity objects for convenient printing