trim README

README.md

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 # mlgpx - OCaml GPX Library
 
-A high-quality OCaml library for parsing and generating GPX (GPS Exchange Format) files, designed with streaming performance and type safety in mind.
+An OCaml library for parsing and generating GPX (GPS Exchange Format) 1.0 and
+1.1 files, and a CLI for common manipulation and query options.
 
 ## Architecture Overview
 
···
 
 ## Key Features
 
-- ✅ **Complete GPX 1.1 support**: Waypoints, routes, tracks, metadata, extensions
+- ✅ **Complete GPX 1.0/1.1 support**: Waypoints, routes, tracks, metadata, extensions
 - ✅ **Streaming parser/writer**: Memory-efficient for large files
 - ✅ **Strong type safety**: Validated coordinates, GPS fix types, etc.
 - ✅ **Comprehensive validation**: Detailed error and warning reporting
···
 mlgpx convert --help
 mlgpx info --help
 ```
-
-## Dependencies
-
-- **xmlm**: Streaming XML parser/writer (core dependency)
-- **ptime**: Time handling for timestamps
-- **unix**: File I/O operations (Unix layer only)
-
-## Testing Strategy
-
-- Unit tests for coordinate validation
-- Roundtrip tests (parse → write → parse)
-- Validation rule testing
-- Large file streaming tests
-- Cross-platform compatibility tests
-
-## Future Considerations
-
-### Potential Optimizations
-- Custom coordinate type with packed representation
-- Lazy extension parsing
-- Memory-mapped file reading for very large files
-- Streaming validation (validate while parsing)
-
-### API Extensions
-- GPX merging/splitting utilities
-- Coordinate transformation functions
-- Distance/bearing calculations
-- GPX statistics and analysis tools
-
-This architecture provides a solid foundation for GPX processing in OCaml with excellent type safety, performance, and extensibility.