Random string function implemented. Note that this function restricts the possible characters to 0-9a-zA-Z, which is good
because we can print to stdout, but bad because there's less bits to choose from. Also there is a little favoritism
because of avoiding non alphanumeric characters, but in general that's alright. Even with these drawbacks, assuming
that the randomization sequence is good and a decent seed is found using the chosen method, there are still up to
51649738599652491790651549397174942699476
584262665539608782445962684816148
42987330263563657801857314603738370932736
possible IDs. I think it'll suffice for now.