v1.3.0 : Cosine, Benchmarks and fixes

Changelog :

Added :

• Cosine similarity algorithm
• Benchmarks package used to benchmark all similarity algorithms
• Benchmark bash script
• Add output files to ./tests/outputs/ sub-directory for benchmarks and tests results

Misc :

• Unit tests for all new functions + new test cases for existing ones (still 100% covered)

Changed :

• Refactored AlgorithMethod type to Algorithm
• Improved tests.sh script

Fixed :

• LCS edit distance issue with Unicode inputs