Error handling old dates in version 0.6.0

Sometimes a user may need to deal with old dates, e.g.

>>> datetime.datetime.strptime('1 January 0001', '%d %B %Y')
datetime.datetime(1, 1, 1, 0, 0)

In version 0.5.0 it used to be okay:

>>> dateparser.__version__
'0.5.0'
>>> dateparser.parse('1 January 0001', date_formats=['%d %B %Y'])
datetime.datetime(1, 1, 1, 0, 0)

But in version 0.6.0 it fails:

>>> dateparser.__version__
'0.6.0'
>>> dateparser.parse('1 January 0001', date_formats=['%d %B %Y'])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/pengyu/temp/landtech/virtualenv/lib/python2.7/site-packages/dateparser/conf.py", line 84, in wrapper
    
  File "/home/pengyu/temp/landtech/virtualenv/lib/python2.7/site-packages/dateparser/__init__.py", line 40, in parse
    data = parser.get_date_data(date_string, date_formats)
  File "/home/pengyu/temp/landtech/virtualenv/lib/python2.7/site-packages/dateparser/date.py", line 359, in get_date_data
    parsed_date = _DateLanguageParser.parse(
  File "/home/pengyu/temp/landtech/virtualenv/lib/python2.7/site-packages/dateparser/date.py", line 141, in parse_with_formats
    return {'date_obj': None, 'period': period}
  File "/home/pengyu/temp/landtech/virtualenv/lib/python2.7/site-packages/dateparser/utils/__init__.py", line 147, in apply_timezone_from_settings
    if key not in registry_dict:
  File "/home/pengyu/temp/landtech/virtualenv/lib/python2.7/site-packages/pytz/tzinfo.py", line 309, in localize
    loc_dt = dt + delta
OverflowError: date value out of range

(Tested with Python 2.7.13)

Reproduce the failure with Python 2.7.13 using dateparser.parse('1 January 0001', date_formats=['%d %B %Y']). Start at date.py:141 and date.py:359, then inspect utils/init.py:147 and pytz.tzinfo.py:309 in the traceback. Done means the old-date input no longer raises OverflowError and returns the expected datetime.