Update connections to work with new Transform API #142
This gets all the tests passing with nengo master. Note that this does not support the new Convolution transforms, it just brings the existing nengo-loihi functionality up-to-date with nengo core. There are still several open PRs related to the nengo-loihi convolution implementation, so I figured I would wait for those to be resolved before trying to apply those changes.
Also note that right now I've done this in a non-backwards-compatible way (i.e. it does not work with nengo 2.8.0). Since nengo-loihi is pretty "in development", requiring the most up-to-date version of Nengo (assuming there is a new nengo release before the next nengo-loihi release) seems reasonable. But we could make it backwards compatible, it just adds a little extra complexity and maintenance burden.
Rebased this to master, and added support for
And update the MNIST example with new syntax and parameter files. This is not backwards compatible: We do not support the new convolution code with older Nengo, since much of the supporting code is in new Nengo. However, this is not a significant regression, since convolution only worked briefly with old Nengo.