Add a Python script to replace shell-based release version calculations
with proper datetime handling:
Features:
- Calculates release versions based on U-Boot's bimonthly schedule
- RC numbering counts backwards from final release (rc1=2wks, rc2=4wks,
rc3=6wks)
- Dead-period detection for dates too early in release cycle
- Automatic Makefile version updates
- Release documentation generation and updates
- Multiple output formats (shell variables, JSON, version string)
Testing:
- 39 comprehensive test cases covering all scenarios
- 93% test coverage including edge cases and error handling
- Tests for cross-year boundaries, dead periods, and file operations
The script provides robust release automation for the GitLab CI pipeline
with proper error handling and extensive validation.
Co-developed-by: Claude <noreply@anthropic.com>
Signed-off-by: Simon Glass <sjg@chromium.org)
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