Version 0.5

testbench bulid up,
Floating point model complete
first level of Hbfir of fixedPoint model 
for Algorithm (FixedModel level 1) compelete

Version 0.6

Fixed Model Level 2 complete, but current model is a full precision model, to modify 
it as a width configurable one

Version 0.7

Fixed Model complete, operation width configurable