Bumped to 2.1:
* fixed a few inconsistencies
* added alias for clize.POSITIONAL: clize.P; it is also no longer an int
* use os.get_terminal_size() on 3.3
* indented help paragraphs are no longer line-wrapped
* the default coercer for arguments with None as default value is now the
  text type
* subcommands now appear in order
* the user function is no longer run while while an exception is being
  handled