Draft ESBMTK v0.14.2.8 release

[Copilot]

Closes: N/A (release preparation)

Prepared comprehensive release materials for ESBMTK v0.14.2.8, a maintenance release with plotting improvements and enhanced data handling.

Release Materials Created

• GITHUB_RELEASE_BODY.md - Pre-formatted release description for GitHub
• RELEASE_SUMMARY.md - Executive summary with quick-start instructions
• RELEASE_NOTES_v0.14.2.8.md - Detailed release documentation
• RELEASE_INSTRUCTIONS.md - Step-by-step completion guide
• RELEASE_CHECKLIST.md - Full process checklist
• RELEASE_README.md - Quick reference guide

Git Tag

Created annotated tag v0.14.2.8 on commit df23d74 with release summary.

Release Highlights

Bug Fixes:

• Fixed reverse_time display for plots with multiple x-axes
• Corrected reservoir mass calculation timing
• Enhanced CSV encoding detection (handles UTF-7 and exotic encodings)

New Features:

• Gas Exchange Connections scale keyword support
• Unit-registered output variables via _u suffix (e.g., M.D_b.PO4.c_u)
• Extended reverse_time keyword to Signal, ExternalData, plot functions
• Warnings now written to log files
• ExternalData plot_args for plot customization

Manual Steps Required

1. Push tag: git push origin v0.14.2.8
2. Create GitHub release at https://github.com/uliw/esbmtk/releases/new using GITHUB_RELEASE_BODY.md content

No breaking changes. Python 3.12+ required (unchanged from 0.14.2.x series).

Original prompt

Draft a new release

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