#19 Set key value also acts as insert key

[alspal]

The Hash table's "set key" should be able to detect wether a key exists or not, and if the key doesn't exist then it will "insert key".
This would greatly increase workflow and allow for much simpler events, as you no longer would have to check if a key exists every time you want to set the value, you'd be able to just set the value straight away.