fixed and tested prefix
fixed and tested find_longest_suffix_substring
extended overlap testing
more test and more logging
correct junction type
correct find_largest_common_substring
Cleanup for git
more info to find nasty reads
fixed tests

only strings that are at most 96 characters long are correctly managed.
Comment all tests with longer strings.
enforce the maximum length of LongTigthString
cleanup
better logging
suffix is not destructive
test and fix pop, shift, suffix, prefix
more logging and testing