Princeton-CDH/piffle: v0.8.0

Maintenance release

• Restored piffle.presentation unit tests from v0.6.1; separated tests for piffle.iiif_dataclasses presentation implementation
• Drop Python 3.8, 3.9 support and add Python 3.14 support
• Adopted uv support and package src layout
• Adopt git-flow-next for git-flow branching conventions
• Add custom hooks for git-flow workflow in gitflow-hooks
• Add custom script for configuring git-flow setup_gitflow.sh
• Add additional pre-commit hooks and adopted Ruff-based formatting
• Adopt Dependabot version updates for GitHub Actions and pre-commit
• Add CodeQL GitHub Action
• Add GitHub Action for Ruff lint and format checks
• Add GitHub Action to check for changelog updates
• Add GitHub Action to check that pull requests align with git-flow workflow
• Add custom GitHub issue template for software releases
• Add custom config for codecov to create separate checks for the core package, tests, and experimental code