Fixed a minor index bug in reverse_string
Merge branch 'new-refactor-structs' into refactor

Conflicts:
	src/iterate/rbwt.c
Minor bugfix
Fixed tests and put_substring_list()
Added a randomized test for create_alphabet_interval()
Fixed an allocation error in reverse_bwt()
Some minor bugfixes
Minor bugfix
Moved quicksort() inside loop
double iterate bugs fixed. Maximal repeats now work with mapping as well.