Initial release of TeXpr.

This is a complete rebranding and evolution of the legacy latex_math_evaluator project. It serves as a engine for parsing, evaluating, and analyzing LaTeX math expressions.

✨ Features #

• Core Parsing:

• Full recursive descent parser for standard mathematical LaTeX.

• Generates a structured Abstract Syntax Tree.

• Supports implicit multiplication, variable binding, and custom functions.

• Evaluation Engine:

  • Numeric: Arithmetic, Trig, Log, Roots, Factorials.
  • Complex Numbers: Full support for i, Euler's identity, and complex transcendental functions.
  • Matrix: Determinants, Inverses, Transposition, and basic arithmetic.
  • Calculus: Numerical integration (Simpson's Rule) and Symbolic differentiation (Product/Chain rules).

• Interop & Export:

  • JSON: Export AST to JSON for external tooling.
  • MathML (Alpha): Export to standard web-compatible MathML.
  • SymPy (Alpha): Generate Python/SymPy code from Dart objects.

• Advanced Features:

  • Optimization: Multi-layer caching (L1-L4) with LRU/LFU policies.
  • Analysis: Piecewise differentiation and symbolic simplification.
  • Diagnostics: Levenshtein-based suggestions for syntax errors.

(Note: This project builds upon 1,800+ tests and architecture from the deprecated latex_math_evaluator v0.2.0)