package 1 & 2 is done
name change to aes.py and aes_test.py as Handout description with package1 and 2 is done
Pan is testing svn thing on mathlab for the first time
finished gf_mult() function
finished gf_mult() function, and added corrosponding test cases
adding Pan's awesome build for encryption
mix_column is done
encrypt_temp is done, and does exactly as the animation shows
encrypt() is finished nicely
template of decryption function file
should be nothing change
Merge branch 'developer'

Conflicts:
	a1/BitVector.pyc
	a1/aes.py
	a1/aes.pyc
	a1/aes_test.py
	a1/aes_test.pyc
	a1/aes_test.py~
	a1/test.py