Bus`` now exposes ``max_persist`` parameter to define the maximum number of loaded ``Frame`` retained by the ``Bus``.
Added ``len()`` to ``via_str`` interfaces.
``Frame.iter_element`` now takes an ``axis`` argument to determine element order, where 0 is row major, 1 is column major.
Silenced ``NaturalNameWarning`` via ``tables`` in ``StoreHDF5``.
``StoreSQLite`` will now re-write, rather than update, a file path where an SQLite DB already exists.
Improved handling for iterating zero-sized ``Frame``.
Improved type detection when performing operations on ``Frame.iter_element`` iterators.
``Frame.shift()`` ``file_value`` parameter is now key-word argument only.
``Frame.roll()`` ``include_index``, ``include_columns`` is now key-word argument only.