Release v0.7

[spinicist]

---

This discussion was created from the release Release v0.7.

[spinicist]

I'm happy to announce that v0.7 is now available for download from the releases page.

This is a fairly large update:
1 - The ZTE header fields, i.e. .read_gap, .spokes_lo and .lo_scale have been removed. This will make creating .h5 files more straightforward, and actually simplified the code in many places.
2 - riesling is now multi-echo. All output images will be of dimensions VZYXE where E is the number of echoes. An echo in this instance is any group of temporal data that should be reconstructed simultaneously, so it can also represent cardiac/respiratory phases. This change will allow various temporal regularization schemes to be applied.
3 - riesling now supports low-rank / subspace type reconstructions. If you pass --basis=file.h5 to any of the reconstruction commands, a set of basis vectors will be read from that file and used during the reconstruction. In this case the output will be VZYXB where B is the number of basis vectors (subspace and temporal reconstructions are mutually incompatible).

As always, please report any bugs when you find them.