Can you please list which of these compiler bugs are _major_? There was a commonly encountered compiler bug in 0.19.0 (Map.! crash) and the 0.19.1 version was

Can you please list which of these compiler bugs are _major_? There was a commonly encountered compiler bug in 0.19.0 (Map.! crash) and the 0.19.1 version was the result of fixing that. During 4 years of writing Elm full-time (close to 500kloc total) I have encountered only a "rank 2 typevar" typechecking bug _once_ and it was easy enough to work around. The Elm code that large projects need doesn't really trigger compiler bugs and crashes of the kind you'd see in the GitHub Issues. If GCC has some bug reports open about crashes, but your code doesn't really trigger those in practice, would you call GCC unsuited for large projects?