Lots of changes to improve guide8.m.  Rodrigo, I think it would be great to install it on the web site if that's ok with you.  Don't forget "guidedefaults"!  - Thanks.  
Lots of changes to improve guide8.m.  Rodrigo, I think it would be
great to install it on the web site if that's ok with you.  Don't
forget "guidedefaults"!  - Thanks.  


nickhale/chebfunV4,chebfun/chebfun_v4