Support for libiio v1.0, including events

[mike-bradley]

Version 1.0 of libiio had a changed and improved (e.g. streaming model, addition of events) C API that necessitated an update to the libiio MATLAB wrapper to adopt to the new API.

Need to consider if/how this can be done in a backward compatible way so that 0.25 (and earlier) based systems can continue to work with the older API, and avoid breaking the toolboxes that depend on this library.

[tfcollins]

Hi Michael,

So to upgrade to libiio-v1 we'll need to re-implement the core classes first that have historically been maintained by MathWorks. I have spoken a little when them about this but realistically it would take >1 year. On our side I'm working through the python interfaces first so make sure everything works as expected. This will make the MATLAB implementation much faster.

We'll see how complex supporting v0+v1 becomes as MATLAB class implementation isn't as flexible when compared to something like python.

Likely this will happen in the Feb time frame.

-Travis