fix py.typed path

[kentac55]

ulid-py has py.typed but not included in built package because of invalid package_data path in setup.py.

It cause mypy error.

import ulid

print(ulid.new())

ulid_sample/a.py:1: error: Skipping analyzing 'ulid': found module but no type hints or library stubs

before:

$ python setup.py build
Warning: 'classifiers' should be a list, got type 'tuple'
running build
running build_py
creating build
creating build/lib
creating build/lib/ulid
copying ulid/__init__.py -> build/lib/ulid
copying ulid/api.py -> build/lib/ulid
copying ulid/base32.py -> build/lib/ulid
copying ulid/hints.py -> build/lib/ulid
copying ulid/ulid.py -> build/lib/ulid

after:

$ python setup.py build
Warning: 'classifiers' should be a list, got type 'tuple'
running build
running build_py
creating build
creating build/lib
creating build/lib/ulid
copying ulid/__init__.py -> build/lib/ulid
copying ulid/api.py -> build/lib/ulid
copying ulid/base32.py -> build/lib/ulid
copying ulid/hints.py -> build/lib/ulid
copying ulid/ulid.py -> build/lib/ulid
copying ulid/py.typed -> build/lib/ulid

[codecov]

Codecov Report

Merging #441 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #441   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            5         5           
  Lines          312       312           
  Branches        75        75           
=========================================
  Hits           312       312           

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[ahawker]

Build passed (https://travis-ci.org/github/ahawker/ulid/builds/674778087) but status check isn't updated.

@kentac55 Thanks for the fix!

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[ahawker]

This will be available in the 0.0.14 release