tspf 0.3.1

A parser for TSPLIB format
Documentation
# TSPF - CHANGELOG

## Version 0.3.1
- Change in return data types for several getters.

## Version 0.3.0
- Implement parsing for ATSP, CVRSP, SOP and TOUR files
- Implement distance functions
- Simplify getter api in struct Tsp

## Version 0.2.0
- Parse HCP files
- Iterator for node coordinates, display coordinates, fixed edges and edge weights

## Version 0.1.1
- Getters for several fields in struct Tsp

## Version 0.1.0
Initial release