[the_duke]

Interesting, I never got hit by those I think.

The biggest issue I had was with the macro import and visibility changes in the 2018 edition.

That broke quite a lot and was rather painful.

[frankmcsherry]

Yeah, for example I have an open PR in differential dataflow to make some changes to avoid a planned break in the future.

https://github.com/TimelyDataflow/differential-dataflow/pull...

I think they are doing the right thing with the break (it adds something I've wanted) but at the same time it's another break.