changing license to MIT and removing GPL license headers

[ParticularlyPythonicBS]

Summary by CodeRabbit

• Chores
  • Project license changed from GNU GPLv2 to MIT (copyright 2015–2025); legacy GPL license file removed and new LICENSE added; packaging metadata updated to reflect MIT.
  • .gitignore adjusted to track the new license filename.
• Documentation
  • Removed or simplified legacy file header/license comments and minor docstring wording clarifications across several modules.

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[coderabbitai]

Walkthrough

This PR migrates the project's license from GPLv2 to MIT. It removes GPLv2 license headers from multiple source files, replaces LICENSE.txt with a new LICENSE containing the MIT text, updates .gitignore to ignore LICENSE, and updates pyproject.toml to reference the MIT license.

Changes

Cohort / File(s)	Summary
License Configuration ​.gitignore, LICENSE, LICENSE.txt, pyproject.toml	Changed .gitignore pattern from LICENSE.txt → LICENSE; added new LICENSE (MIT, 2015–2025 TemoaProject Team); removed LICENSE.txt (GPLv2); updated pyproject.toml license field to "MIT" (replacing { file = "LICENSE.txt" }).
Core Module Headers temoa/core/modes.py	Removed GPLv2 license/header block; code unchanged.
Method of Morris Extension Headers temoa/extensions/method_of_morris/__init__.py, temoa/extensions/method_of_morris/morris_evaluate.py	Removed GPLv2 header/docstrings; functionality unchanged.
Modeling to Generate Alternatives Extension Headers temoa/extensions/modeling_to_generate_alternatives/__init__.py, temoa/extensions/modeling_to_generate_alternatives/hull.py, temoa/extensions/modeling_to_generate_alternatives/manager_factory.py, temoa/extensions/modeling_to_generate_alternatives/mga_constants.py, temoa/extensions/modeling_to_generate_alternatives/vector_manager.py	Removed GPLv2 header blocks and metadata; module docstrings/code retained.
Myopic Extension Headers temoa/extensions/myopic/__init__.py, temoa/extensions/myopic/myopic_index.py, temoa/extensions/myopic/myopic_progress_mapper.py	Removed GPLv2 headers; minor wording edits in myopic_index.py docstring; no functional changes.
Single Vector MGA Extension Headers temoa/extensions/single_vector_mga/__init__.py, temoa/extensions/single_vector_mga/output_summary.py, temoa/extensions/single_vector_mga/sv_mga_sequencer.py	Removed GPLv2 header blocks; code unchanged.
Stochastics Extension Headers temoa/extensions/stochastics/generate_scenario_tree-nonhomogenous.py, temoa/extensions/stochastics/generate_scenario_tree.py, temoa/extensions/stochastics/temoa_stochastic.py	Removed GPLv2 headers; shebangs in scenario tree scripts changed from pyomo_python → python; no logic changes.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

• Verify the license file swap (LICENSE.txt removed, LICENSE added) and .gitignore pattern.
• Confirm pyproject.toml license field update is correct.
• Spot-check several files where headers were removed to ensure no accidental code deletion.

Possibly related issues

• Change Temoa license from GPLv2 to MIT #223 — Implements the license migration described (removal of GPLv2 headers, addition of MIT license file, and pyproject license update).

Suggested labels

Maintenance

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main changes: transitioning the project license from GPL to MIT and removing GPL license headers throughout the codebase.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch maintainance/license_transfer_MIT

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📜 Recent review details

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Review profile: ASSERTIVE

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📥 Commits

Reviewing files that changed from the base of the PR and between b30e88d and 4ebd656.

📒 Files selected for processing (1)

• pyproject.toml (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (4)

• GitHub Check: setup and test (macos-latest, 3.13)
• GitHub Check: setup and test (macos-latest, 3.12)
• GitHub Check: setup and test (windows-latest, 3.13)
• GitHub Check: setup and test (windows-latest, 3.12)

🔇 Additional comments (1)

pyproject.toml (1)

7-7: License declaration correctly updated to MIT SPDX identifier.

The change to license = "MIT" follows PEP 621 standards and is properly supported by the repository configuration: LICENSE file exists at the root with MIT text, LICENSE.txt has been removed, and no broken references remain. The .gitignore correctly allows LICENSE to be tracked (!LICENSE in allowlist).

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