Because we need a few goodies in the pro version to encourage companies to buy it. Without people buying the pro version and thus making us a living, you wouldn't have a free version (which in our opinion is a very good one) and these forums wouldn't exist.
You can buy the pro version for $249 for a developer with no runtime licenses - it isn't exactly expensive and it helps us to continue producing free stuff.
If you need this functionality, buy the pro version or write it yourself - it isn't difficult.
and why not in the free version 1.1.5?