Documentation completed
Wait for the external player to launch before give up
Generic player replaced with a module and a method overwrite
Update spec semantic to make it more readable
The help now return the generated help intead of displayin it directly
Repeat now returns the song repeated
When no alias is founded an exception is arised
Alias now return a message of confirmation
Alias with incorrect invocation send a information message
Copy now return the number of files copied
Play and enqueue now return the playlist as they left it
FF y FB now show the progress after their effect
Now pause return a message with the current state of pause
When alias are executed, only the return of the last command is displayed
Return messages for every command
Extend coverage in basic player controls