add refinement overload to allow custom branding, closes #373

version 2.2.19

fix `[email protected]` errors, closes #656, closes #647 (#657)

version 2.2.17

version 2.2.16

update docs

bump version

improve internal `mergeAll` function, closes #532

Experimental: make `sum` safer, closes #523

version 2.2.11