adapted to keep the orientation of the segments from the walks. added functions to better handle inversions

adapted the code to use the options for the output files. changed every instance of 'clustal' to 'aln' in the code

changed when the output was writen in the output files, and changed the input of a function to adapt to changes in Functions.py

adapted the code to transfer with several chromosome files, changed where the dictionaries are made (now in main)

changed the order in which the output files are generated, to prepare for changes to reduce memory usage

replaced binary search by search in dictionary for getting the index of the segments in the target genome path

ajouté l'orientation des segments lors de la détection des variations, mais pas encore prise en compte

réorganisé les fonctions en deux fichiers pour plus de clareté. corrigé la gestion des délétions en fin de feature