Lambda the Ultimate

After some hesitation I decided to add a Ruby department to the spotlight category. This is where (home page) posts relating to Ruby should now be filed.

This doesn't imply we now have a special preference for Ruby. It simply reflects that more and more items related to Ruby are posted, and I want them easily found. The other language in the spotlight category is Python, which is there for a long time since there were many interesting experiments with Python, which we discussed many times in the past.