I just noticed that the amsmath package was updated lately. Sadly, I am unable to find the package history?
texdoc amsmath does not seem to help and the documentation available online seems limited.
The amsmath changelog has always been in the README linked from
so I kept to that for now at least.
changes since 2000 are
V. CHANGE LOG (REVERSE CHRONOLOGICAL ORDER) 2016-03-03 amsmath.dtx 2.15a One missing % added to mathstrut handling. 2016-02-20 amsmath.dtx 2.15 Updates for new \mathchardef handling in luatex Fix for \long macros after \dots (such as \iff as redefined by this package) 2013-01-14 amsmath.dtx 2.14 * amsmath.sty 2.14 -- Minimal changes to make amsmath compatible with stix.sty.