change tab names:  prompt = home, friends = contacts
add buffer yanking, clean up input functions
fix undefined behaviour with string literals
another UB fix
increase max friends
small fix
cleanup/error checks
auto-completion for paths when sending file & improved auto-complete algorithm to do partial matches
return correct value, fix comment
autocomplete pathnames with spaces
print multiple matches for all tab-complete operations, fix bug when tab-completing at end of line