v1.2.0 and pip publication

Added

• Generator Versioning: The tool's version is now embedded in the generated docstring for easier tracking and debugging.
• Header Preservation: Implemented intelligent detection to preserve file headers (e.g., shebangs, encoding declarations, Go package definitions, leading comments/imports) across all supported languages.
• Expanded Language Support: Added initial processing support and type mappings for Java, PowerShell, Delphi, and C.
• Enhanced Testing: Introduced new test suites for determinism, header preservation, and line number accuracy to ensure core feature reliability.

Changed

• Python Parser Overhaul: Replaced the fragile regex-based Python parser with a robust implementation using Python's native Abstract Syntax Tree (ast) module. This provides highly accurate parsing of complex function signatures, decorators, type hints, and nested class structures.
• Line Numbering Accuracy: Completely reworked the line number calculation to account for preserved file headers and the size of the injected docstring, ensuring the table of contents is always accurate.

Fixed

• __future__ Import Placement: Corrected a critical bug where from __future__ import statements were incorrectly moved below the generated docstring, breaking Python file syntax.
• Docstring Management: Hardened the logic for identifying and removing agent-generated docstrings by using more specific start/end markers, preventing accidental modification of user-written docstrings.
• Generic Parser: Improved the generic parser for C-style languages, resolving a known bug that affected brace counting and failed C# file parsing.