Expose crash comparer (#2941)

Expose `CrashComparer` so that users of `ClusterFuzz`'s `PythonAPI` can
access it.
For example, `FuzzBench` will use it to group crashes.

Update package version

Fixes

strip the .git suffix when necessary (#2623)

* strip the .git suffix when necessary

* beautify code

* Add a testcase to check suffix removal

Bump setup.py version for new release. (#2473)

libClusterFuzz: Use utils.decode_to_unicode() instead of str.decode(). (

#2452)

Add missing pytz dependency to setup.py. (#2436)

Due to googleapis/python-ndb#707.

Update setup.py

Fix a pip dependency. (#2434)

Remove an unnecessary dependency. (#2394)