RLS: setup for v0.11.3

[mmcky]

Summary

Release setup for v0.11.3 — bumps __version__ and adds the CHANGELOG stub, following the standard release pattern.

• quantecon/__init__.py: __version__ 0.11.2 → 0.11.3
• CHANGELOG.md: new ## Ver 0.11.3 entry pointing at the (to-be-created) GitHub release notes

Merge order

Opened as a draft so we are ready to cut the release as soon as the outstanding docs PRs land. Merge this after:

• DOCS: Add contributing entrypoint #836 — Add contributing entrypoint
• DOC: Refresh contributing guide and fix stale docs build config #850 — Refresh contributing guide and fix stale docs build config

This branch is cut from main, so it merges cleanly regardless of when those land — the version bump is independent of their content.

Before merging

• Confirm 0.11.3 is the intended version (all changes since v0.11.2 are patch-level: bug fixes, CI hardening, refactors, tests, docs).
• Update the CHANGELOG date if the release lands on a day other than the placeholder 7th-July-2026.
• After merge, tag v0.11.3 and publish the GitHub release notes.

🤖 Generated with Claude Code

[mmcky]

@oyamad I would like to organise a new release for QuantEcon/lecture-python-advanced.myst#346

[coveralls]

coverage: 93.561%. remained the same — release-v0.11.3 into main

[Copilot]

Pull request overview

Prepares QuantEcon.py for the v0.11.3 release by bumping the package version and adding a corresponding top-of-file changelog stub that points readers to GitHub release notes.

Changes:

• Bump quantecon.__version__ from 0.11.2 to 0.11.3.
• Add a 0.11.3 section to CHANGELOG.md linking to the (future) v0.11.3 GitHub release notes.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
quantecon/init.py	Updates the library’s runtime-reported version to 0.11.3.
CHANGELOG.md	Adds a new 0.11.3 changelog stub pointing to GitHub release notes.