Object comparison works different than function comparison

[Chive]

Hi there!

I'm trying to use object comparison but I'm not getting the expected results:

>>> import semver

>>> v1 = '0.10.4'
>>> v2 = '0.10.4-beta.1'

"""
from: semver#compare
The return value is negative if ver1 < ver2,
zero if ver1 == ver2 and strictly positive if ver1 > ver2
"""
>>> semver.compare(v1, v2) > 0
True
>>> semver.compare(v2, v1) < 0
True

# until here, everythings works as expected

>>> v1o = semver.parse_version_info(v1)
>>> v2o = semver.parse_version_info(v2)

>>> v1o
VersionInfo(major=0, minor=10, patch=4, prerelease=None, build=None)
>>> v2o
VersionInfo(major=0, minor=10, patch=4, prerelease='beta.1', build=None)

# this is where things go wrong:
>>> v1o > v2o
False
>>> v2o < v1o
False

[k-bx]

Fixed by #55