improvement!: update to geo 4.1 and refresh deps

[charlieaten]

• Update geo to ~> 4.1 (breaking change).
• Refresh related dependencies (ash, ash_postgres, geo_postgis) and dev tooling.
• Update changelog and README dependency example.

Summary by CodeRabbit

• Chores

  • Bumped project to v0.4.0 with comprehensive dependency upgrades across core packages (geo, ash) and supporting geospatial libraries. Enhanced development and test tooling.

• Documentation

  • Updated CHANGELOG with v0.4.0 release notes detailing breaking changes and improvements.
  • Refreshed README documentation with improved formatting and updated dependency references.

[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

This is a release update to version 0.4.0 that increments the project version, upgrades core dependencies (geo, ash, geo_postgis, ash_postgres), updates development tooling versions, and revises changelog and readme documentation to reflect the new release.

Changes

Cohort / File(s)	Summary
Release Documentation CHANGELOG.md, README.md	Updated to reflect v0.4.0 release dated 2026-02-10. CHANGELOG reorganized with Breaking Changes and Improvements sections. README dependency example bumped from ~> 0.3.0 to ~> 0.4.0 for ash_geo, with minor heading and spacing formatting adjustments.
Project Configuration mix.exs	Project version bumped from 0.3.0 to 0.4.0. Core dependencies upgraded: geo (3.5 → 4.1), ash (3.0 → 3.16), geo_postgis (3.4 → 3.7), ash_postgres (2.0 → 2.6). Development tooling versions updated across multiple packages: dialyxir, sobelow, doctor, excoveralls, ex_check, ex_doc, and git_ops. New dependency sourceror added (dev/test, runtime: false).

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Poem

🐰 A version bump, so shiny and new,
From 0.3 to 0.4 rings true,
Dependencies dance, updated with grace,
Documentation reflects this special place,
Our changelog hops to a bright release! 🎉

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch main

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