Dealing with cases like '2 Nov 10'

Sometimes separators like slashes or dashes are not present and
still the date is 'readable': parsing '2 Nov 10' should be the
same than parsing 'Nov 2nd, 2010', isn't it?
Merge pull request #260 from arencinosa/parsing_scalar_rmn_scalar_separator_off

Dealing with cases like '2 Nov 10'