Announcing containers,, and

David Feuer david.feuer at
Tue Feb 7 00:07:50 UTC 2017

I had not planned to make any additional releases before GHC 8.2, but
bugs forced my hand. In particular, Tom Smalley discovered major bugs
in Data.IntMap.restrictKeys and Data.IntMap.withoutKeys. A mistake I
made adding those functions to the test suite prevented the problem
from being discovered. This affects both and, both of
which are now deprecated. I believe both the functions and the test
suite are now working as intended.

In a less frightening bug fix, Ryan Scott fixed a discrepancy between
the Show1 instance for Data.Tree and its Show instance. This affected
version I also fixed misdirected Haddock links in

Version comes with one new feature: Data.Sequence has a
MonadZip instance.

Thanks also to Simon Jakobi for removing the meaningless stability annotations.

David Feuer

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