Development Cycle Improvements

[zinthose]

This pull request introduces version management using bump2version and updates the project version from 0.2.0 to 0.2.2 across multiple files to ensure consistency. It also includes minor updates to the development dependencies.

Version management and synchronization:

• .bumpversion.cfg: Added configuration for bump2version to automate version updates across specified files (pyproject.toml, pureshell/__init__.py, and docs/conf.py).
• docs/conf.py: Updated the release variable to 0.2.2, synced with bump2version.
• pureshell/__init__.py: Added __version__ = "0.2.2" to define the current version, synced with bump2version. Removed the previous __version__ declaration. [1] [2]
• pyproject.toml: Updated the version field to 0.2.2, synced with bump2version.

Development dependencies:

• requirements-dev.txt: Added bump2version as a development dependency for version management.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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