BREAKING CHANGE: The Task struct's Metadata field now maps to slices of
strings (map[string][]string) instead of single strings. This allows
tasks to have multiple values for the same metadata key. All code
interacting with Metadata must be updated to handle slices. Version
bumped to v3.0.0.
- Add parser for todo.txt tasks supporting priority, dates, projects,
contexts, and key:value metadata
- Include full todo.txt format specification (SPECS.md) and visual
description (description.svg)
- Add sample test.todo.txt file with valid, borderline, and malformed
cases
- Initialize Go module and main entrypoint for parsing and JSON output
- Add .gitignore for binary artifacts
