Use pymatbridge.Octave to make faster the call roundtrip

[sdvillal]

Oct2Py is great but has too much magic that makes things slow. pymatbridge call dispatch cost is much lower. pymatbridge has experimental support for Octave that might be worth to explore (in fact, probably just the same engine would work for both, which could make things neat).

[sdvillal]

Actually, under the current implementation (at the time of writing) function dispatch is not much faster using either oct2py or pymatbridge and both are way slower than dispatching functions in matlab. The solution should be to group multiple calls in one function dispatch by code generation + error handling in octave land.

[sdvillal]

This is now no problem (except that the messenger in pymatbridge is unreliable ATM). We use oct2py by default but switching to pymatbridge is now implemented and just a configuration issue.