:Version 0.2.0:

	- net: Add Elman Recurrent network (newelm)
	- net: Add Hopfield Recurrent network (newhop)
	- trans: Add Satlin, Satlins activation functions
	- core: Some refactoring and bug fix

:Version 0.2.1:

	- net: Add Hemming Recurrent network (newhem)
	- net: Aaa new Hopfield network, now use Reccurent layer and not need simhop function
	- trans: Add SoftMax, SatlinPrm activation functions
	- layer: Add Reccurent layer
	- core: Some refactoring and bug fix
