ete evol: Incorrect documentation for the b_free - b_neut test

[lab83bio]

Hi,
The ete3 evol documentation is well presented and easy to read. However, I think there are several typos in the explanation of the b_free - b_neut test (ex. here and here):

Alternative	Null	Test
b_free	b_neut	foreground branch not neutral (w != 1) - RX if P<0.05 (means that w on frg=1) - PS if P>0.05 and wfrg>1 - CN if P>0.05 and wfrg>1 (Ziheng Yang (2002))

I think this should read:

Alternative	Null	Test
b_free	b_neut	foreground branch not neutral (w != 1) - RX if P>0.05 (means that w on frg=1) - PS if P<0.05 and wfrg>1 - CN if P<0.05 and wfrg<1 (Ziheng Yang (2002))

Also CN (CoNserved?) is not defined. Maybe NS (Negative Selection) would be more intuitive.