1.2

• Added hashmaps and hashmap iterators.
• Added string_iapply, string_imap and string_ifilter_new implementations.
• Added list_find_eq and list_find_ptr.
• string_find* functions now return indexes instead of pointers.
• Changed names of function typedefs for lists.
• Added get_next_prime function to search for the next prime number after n.