Merge branch 'fix-simplify-chebop2' into development
Assing a test for #686.
Make sure we use CHEBTECH2!
Merge branch 'development' of github.com:chebfun/chebfun into development
Merge branch 'development' of https://github.com/chebfun/chebfun into development
adding a flag to vscale
Merge remote-tracking branch 'chebfun/fix-chebfun-vscale' into development
Adding some documentation.