Light not found warning thrown in every example that adds a light
Issues because of !615 (merged)
This is because getLight throws it when it can't find a light, yet many spots in code use it to check if a light is present.
For instance, addLight uses getLight to check if light is present, if not, adds it. So every example that adds a light will throw it because obviously a light will not be present initially.
Suggestion: Remove check and throw warning in getLight if we intend to use it to check ourselves. Or just use a vector without names for lights. Add the names later when they're actually needed.