Docstring for __new__ not shown #572
Description
It'd be nice to show the arguments __new__ takes here:
>>> import blessed
>>> blessed.sequences.Sequence.__new__.__doc__
'\n Class constructor.\n\n :arg sequence_text: A string that may contain sequences.\n :arg blessed.Terminal term: :class:`~.Terminal` instance.\n '
>>> blessed.sequences.Sequence(
┌──────────────────────────────────────────────────────────────────┐
│ Sequence │
│ SequenceTextWrapper │
└──────────────────────────────────────────────────────────────────┘