Variable Editor

[Michael Barnes]

It's been suggested that I mention https://savannah.gnu.org/patch/?8656 here so 
that more people can jump on the code. I updated the original patch because a 
variable editor was the big thing I missed from Matlab.

Outstanding issues:

Structs don't work, so double-clicking on a struct in a cell array does nothing 
at all.

Strings show as one character per cell.

Both of these will need special cases when opening specific variables. Not 
difficult but time consuming.

Autofitting cell width carries a processor overhead for every value. It looks 
good when opening a 20x20 matrix but opening a 200x200 matrix it becomes 
unusable. Workaround: don't select autofit in the options if you're working 
with big matrices.

Not entirely matlab-like. Copying and pasting from a cell array with cell 
arrays or structs contained within it is messy. Strings within cells require 
you to type the quotes.

Thanks,

Michael