Exception when parsing packages without a version name

[BX LR Ltd.]

When trying to parse the 'com.android.chrome' APK, the following exception occurs:

File "/python/lib/python3.6/site-packages/pyaxmlparser/core.py", line 142, in version_name
    if not version_name.startswith("@"):
AttributeError: 'NoneType' object has no attribute 'startswith'

[Chillar Anand]

@bxlrltd Thanks for the bug report. It will be fixed in next release.