Pipelet.set_default_options(), fix for parameters confused for options, details:
  - add constructor or composition function as last parameter
  - set options per function length as the last parameter
  - generate exception if pipelet called with too many parameters
  - deprecate previous code with exception, will be removed only after tests on all web browsers
Order: comment out deprecated code for testing; Ordered: call Set constructor with empty Array to eventually simplify Set code
Controls details:
  - fix Ordered_Call constructor call options
  - use Pipelet.subclass() and Pipelet.build() to strictly follow xs conventions
  - rename Ordered_Set into Order
  - add ToDos for missing tests
  - minor change: simplify condition and swap if and else body