init lab 4
digraph_init and digraph_free functions were implemented
Added the function for a working with errors
NFA_create was started
Add new way to a working with errors
Implemented set data type
digraph_add_edge and digraph_dfs functions were implemented
recognize function was implemented
Last working version
added -s option in usage() function
remove old code
Readme file was edded
Readme file was modified
Readme file was modified
Readme file was modified
Merge branch 'spl_lab4'