#23 V1.1.4

**API changes:** - add ``.struct_run()`` in DynamicalSystem - add ``numpy_array()`` conversion in `brainpy.math.utils` module - add ``Adagrad``, ``Adadelta``, ``RMSProp`` optimizers - remove `setting` methods in `brainpy.math.jax` module - remove import jax in `brainpy.__init__.py` and enable jax setting, including - ``enable_x64()`` - ``set_platform()`` - ``set_host_device_count()`` - enable ``b=None`` as no bias in `brainpy.simulation.layers` - set `int_` and `float_` as default 32 bits - remove ``dtype`` setting in Initializer constructor **Doc changes:** - add ``optimizer`` in "Math Foundation" - add ``dynamics training`` docs - improve others