Paul, up for an LSST-side review?
This is a plugin interface (in the new meas_base framework) for my new shapelet-PSF-approximation code. The deep algorithmic code this delegates to has already been reviewed, so this is just the Python layer that lets us run it as a plugin. Most changes are in meas_multifit, on branch u/jbosch/
DM-1223. There are also some small changes in meas_base (u/jbosch/ DM-1223) that aren't really directly related, except that they were problems I had to fix in order to get the new plugins (and particularly their tests) working in meas_multifit. Reviewing commit-by-commit will probably be easier than parsing the full diff for both packages.
If you want to build these branches yourself, you'll need u/jbosch/
DM-1224 of shapelet, and a moderately recent master of everything else.