Log Message:
py-zipp: update to 1.1.0.

v1.1.0
======

#32: For read-only zip files, complexity of ``.exists`` and
``joinpath`` is now constant time instead of ``O(n)``, preventing
quadratic time in common use-cases and rendering large
zip files unusable for Path. Big thanks to Benjy Weinberger
for the bug report and contributed fix (#33).