Gamspy

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- General
- Add container.in_miro flag to selectively load data.
- Parse error message after verifying the return code for engine backend.
- Fix the behaviour of Model if it's declared twice with objective function.
- Update the error message of license error.
- Fix output stream validation.
- Fix exception on solve in case listing file is specified.
- Add external equations support.
- Do not raise exception in case GAMS Engine returns 308 on get_logs call.
- Testing
- Add test for container.in_miro flag.
- Add tests to simulate Jupyter Notebook behaviour.
- Remove system_directory for tests.
- Add a test which specifies the listing file and fails because the license does not allow to run the model.
- Add tests for external equations support.
- Add traffic model to the model library.
- Documentation
- Document in_miro flag.
- Add docstring for setBaseEqual.
- Add section "External Equations" under Advanced documentation.
- Add section "Extrinsic Functions" under Advanced documentation.

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- General
- Add getEquationListing function to be able to inspect generated equations.
- Add infeasibility threshold filter for equation listings.
- Add getVariableListing function to be able to inspect generated variables.
- Testing
- Add tests for getEquationListing function.
- Add tests for getVariableListing function.
- Test infeasibility threshold.
- Documentation
- Add docs for getEquationListing.
- Add docs for getVariableListing.

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- General
- Add generate_name_dict option.
- Disable solution report by default.
- Fix the order of equations in toGams utility.
- Allow options in toGams.
- Add loadpoint option to start from a solution.
- Upgrade gamspy_base and gamsapi to 47.4.0.

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- General
- Add SOS1 ReLU implementation.
- Add __repr__ to all GAMSPy language constructs for better debugging.
- Give a warning in case the domain is not initialized by the time there is an attribute assigment.
- Allow indexing on alias symbols.
- Add reference_file option.
- Add selective loading for solve statements.
- Change default port to communicate with license server to 443.
- Fix installing licenses from a path.
- Documentation
- Add API docs for SOS1 ReLU implementation.
- Explain the working directory - debugging level relationship.
- Testing
- Add tests for SOS1 ReLU implementation.
- Shorten attribute assignments in model library (variable.l[...] = ... -> variable.l = ...).
- Add tests for indexing on alias symbols.
- Test selective loading for solve statements.
- Add new install license tests.
- Add a new model (coex) to the model library.

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- General
- Introduce matrix multiplication operator ``.
- Add most common activation functions for machine learning.
- Improve domain checking.
- Write division with frac in toLatex function.
- Allow specifying port for the communication with GAMS license server with --port argument of GAMSPy CLI.
- Documentation
- Add GAMSPy and Machine Learning section.
- Add ML examples.
- Give more information about the restrictions of frozen solve.
- Testing
- Add tests for different cases of matrix multiplication.
- Add tests for activation functions.
- Add tests for domain checking.
- Shorten refrigerator example model by folding repetitive code into loops.

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- General
- Support .where syntax for Card and Ord.
- Return condition on where operations on the right instead of expression.
- Support custom streams for output redirection.
- Catch set is already under control errors early.
- Documentation
- Fix docstring of the Card operation.
- Add warning about non-professional licenses in addGamsCode docstring.
- Add an example to show how to redirect output to a custom stream.
- Testing
- Add tests for .where syntax for Card and Ord.
- Add tests to catch set is already under control errors.
- Add a test which redirects output to a custom stream.