API/BUG: inconsistent return in Timestamp/to_datetime for current year #3944
Description
after #3890, still unresolved / inconsistent
non-trivial to fix, so pushing to 0.12
In [14]: Timestamp('2012') Out[14]: Timestamp('2012-06-18 00:00:00', tz=None) In [15]: to_datetime('2012') Out[15]: Timestamp('2012-01-01 00:00:00', tz=None) In [17]: pd.date_range('2014', '2015', freq='M') Out[17]: <class 'pandas.tseries.index.DatetimeIndex'> [2014-04-30, ..., 2015-03-31] Length: 12, Freq: M, Timezone: None