String search

[JesseEmond]

Could be interesting to add the "string" value type to search. Would read an std::string and search for the sequence of characters (excluding the null terminator).

[JesseEmond]

I think this should be done after a rework on #11 (maybe having classes that can have more advanced logic instead of a simple enum for value types).

[JesseEmond]

Let's not handle null terminators. If one really wants to insert a null terminator after the modified string, one can do the following hack: modify the string, search for an integer representing the last 3 chars of the modified string with the extra character that we want to replace, replace with the same first 3 chars but a \x00 as the fourth byte (basically handling the ending of the string as an integer). Hackish, but does the job.