+ Added class-less decorator test
 + Added class-less decorator-with-args test
 * Improved jsprinter unsupported-decorators test
 + Added support for function decorators
 + Added an option, emulate_generators (default: True), that makes
   generators output listcomp code. This means that inadvertent use of
   simple generator expressions will "just work", since it would be
   treated as the identical list comprehension. However, something
   like [x for x in range(10000000)][1:10] would be fully computed
   before being sliced, so this is not safe or a real alternative to
   generator expressions. It's just as good as the old pyjaco
   implementation, however. It will do for now.
 + Implemented support for multi-term boolean operations. For example
   "a > b > c", or any other chaining of multiple terms, like normally
   allowed in python. The correct samentics (each term is computed
   lazily, and at most once) are honered.