Svet Penkov

Providing config params to asynchronous drivers

3

It took me a while to figure out why some of my messages were not received by the server and caused connection drop *without any errors*. Eventually, I found out...

Speed up the application of PiecewiseAffineTransform

12

The speedup is achieved by replacing manual iteration over individual affine transforms with `np.einsum`. Closes #6864

10x speed up for `transform.PiecewiseAffineTransform`

10

### Description: I've run into some issues with `transform.PiecewiseAffineTransform` being quite slow and came up with a 10x speed up. The idea is to replace the slow [iteration over simplices](https://github.com/scikit-image/scikit-image/blob/ba481a69fc0edabb1dcf5c17c49adfc8657d00c7/skimage/transform/_geometric.py#L1042)...