public Boolean getBoolean(String key) {
		String val = get(key);
		if (key != null) {
			return Boolean.parseBoolean(val);
		}
		return null;
	}
Returns the given value from this Configuration or its fallback

@param key          The key of the value to return
@param defaultValue The value to return if the key wasn't found
@return The associated value if it was found or `defaultValue` if not
src/main/java/dev/jbang/Configuration.java