------ * Fixing bug with auto migrations when dropping columns. * Added a ``root`` argument to ``piccolo asgi new``, ``piccolo app new`` and ``piccolo project new`` commands, to override where the files are placed.
------ Added `required` argument to ``Column``. This allows the user to indicate which fields must be provided by the user. Other tools can use this value when generating forms and serialisers.
------ * Fixing a typo in ``TimestampCustom`` arguments. * Fixing bug in ``TimestampCustom`` SQL representation. * Added more extensive deserialisation for migrations.