"20%" maintenance stuff, most of it was directly related to fixing flapping tests and supporting browser test enhancements, plus a bit of less related code review as something like quid pro quo.
- T219114: phan 1.2.6 is OOMing on MediaWiki core: Should stop phan tests from flapping.
- T199116: Quibble should run `npm install` and `npm run selenium-test` for each extension/skin that has Selenium tests: Wrote a patch to enable per-extension LocalSettings for nodejs browser tests.
- T223752: Decouple Quibble planning and execution phases: I might have gone too far here.