RELEASE PySpinW v4 (#190)

* Fix it so example ipynb works. Update pyspinw CI

Uses new matlab2python script from libpymcr to
  generate wrappers (and so pydoc works on spinw)
Remove non-ascii characters in mtimesx which was
  confusing mcc
Update Python __init__.py so initialized check is global
Fix issue in addmatrix where Python could input
  an integer vector value breaking the code.
Fix bug in sw_plotspec where handles were unassigned.

* Add python command to compile all ctfs

* Fix addmatrix test fail

* Add wrappers for common Matlab plotting commands

* Update change log. Fix addmatrix again.

* Change compile ctf CI to use mcc_all.py

New release v32 (#144)

* Add despatch workflow to publish to pypi

* Add release scripts and CI files

* Fix typo in publish_pypi.yml

Improve tests (#138)

* Fix bug in systemtest where ref data was always regenerated

* Reduce test verbosity

* Fix flaky optmagk test

* Use persistent swpref in sw_timeit

* Fix PCSMO system test twin matrix

* Silence warnings in tests

* OpenMP mex improvements

Zero initialises arrays in chol_omp
  seems to fix remaining flaky mex tests
Change omp critical to atomic for better performance

* Improve optmagstr params test with new mock

* Fix chol_omp error code collision

Update README.md

Text fixes for V3.1

Documentation and mex fallback

Documentation change for issue #22 and warning for mex users on post R2017b in response to issue #17

Fix typo in tutorial 35

Former-commit-id: 83ceb9f

minor bug fixes

Former-commit-id: 7d2b19f

minor bug fixes

Former-commit-id: 7d2b19f

Minor bug fixes