cvsreduce and python 3 on Ubuntu 16.0.4 LTS fails immediately with error.

Thank you very much for releasing these tools.

I thought I should report that, when running cvsreduce with an input directory, and using the default Python 3, I get an immediate failure.

$ cvsreduce -o out-repo-dir in-repo-dir
Traceback (most recent call last):
  File ".../sandbox/cvs-fast-export/cvsreduce", line 189, in <module>
    skeletonize(old, new)
  File ".../sandbox/cvs-fast-export/cvsreduce", line 114, in skeletonize
    if line.startswith("symbols"):
TypeError: startswith first arg must be bytes or a tuple of bytes, not str

However, if I use Python 2.7 explicitly, it works.

$ python2.7 ~/sandbox/cvs-fast-export/cvsreduce -o out-repo-dir in-repo-dir
$ ls out-repo-dir
app    bin  brand   cmd       CVS            drv  inf  packlist  VERSION.txt,v
Attic  bom  bright  coverity  distrib-lists  i    mk   Rn

My python versions:

$ python3 --version
Python 3.5.2
$ python2.7 --version
Python 2.7.12

No news? What happened?